If you are modifying an open textbook that is in the public domain, you are not required to attribute the original author. However, if you are modifying an open textbook that is licensed under one of the CC BY (Creative Commons Attribution) licenses, then acknowledging the author(s) of the original work is required as well as indicating who owns the copyright, how the original work was licensed, and what the substantive changes were made.
There is one caveat. If the textbook you are adapting uses a Share-Alike license, then you must release the book with the same license that it was originally released with. The Share-Alike clause means that you must use the exact same license that was used in the original for ANY adaptation.
If you are using Pressbooks to create an adaptation, the license type chosen for the adapted portions of your open textbook and the license used for the original book, should be noted in a couple of places in the book, along with the changes made. You should also indicate who holds the copyright to specific parts of the book. For our purposes here, we’ll refer to this as the adaptation statement. This statement should be noted as follows:
- In the preface or other front matter page of the book there should be a clear statement that this book is an adaptation of an original open textbook.
- There should also be a list of what changes were made or what new material was added to the original version in the Copyright Notice field (found on the Book Info page) so readers know which parts are newly created or changed, and which are from the original source.
If you are creating an adaptation using another system, such as Word, then displaying the adaptation and licensing information in the preface or other front matter page of the book should be sufficient.
Keep in mind that the reader could be viewing a printed copy with page numbers or an electronic version with no page numbers, so do not use page numbers as references. Instead, use chapters and chapter sections as reference points within the book.
Here is an example of an adaptation statement used on an About the Book page in the front matter of an adapted open textbook created in Pressbooks.
The following is an example of the copyright statement. In Pressbooks, this information is added to the Copyright Notice field on the Book Info page. For an adaptation created using another system, such as Word, this information can be added to the preface or other front matter page of the book.
Notice that these items are addressed:
- The license under which the book, as a whole, is released. The license type is hyperlinked to a page on the Creative Commons website that explains this license.
- A short description about the permissions granted by this license.
- Who owns the copyright, when the copyright began, and for which parts of the book.
Unless otherwise noted, Introductory Business Statistics with Interactive Spreadsheets – 1st Canadian Edition is (c) 2010 by Thomas K. Tiemann. The textbook content was produced by Thomas K. Tiemann and is licensed under a Creative Commons-Attribution 3.0 Unported license, except for the following changes and additions, which are (c) 2015 by Mohammad Mahbobi, and are licensed under a Creative Commons-Attribution 4.0 International license.
All examples have been changed to Canadian references, and information throughout the book, as applicable, has been revised to reflect Canadian content. One or more interactive Excel spreadsheets have been added to each of the eight chapters in this textbook as instructional tools.
The following additions have been made to these chapters:
- chi-square test and categorical variables
- null and alternative hypotheses for test of independence
- simple linear regression model
- least squares method
- coefficient of determination
- confidence interval for the average of the dependent variable
- prediction interval for a specific value of the dependent variable
You are free to use or modify (adapt) any of this material providing the terms of the Creative Commons licenses are adhered to.