Elliott, M. (2004). Empowering the spirit II: Native literacy curriculum. Owen Sound, ON: Ningwakwe.

Freedman, J. (2009). Genetically modified food: How biotechnology is changing what we eat. New York, NY: Rosen.

Galat, J.M. (2014). Branching out: How trees are part of our world. Toronto, ON: Owlkids.

Giannetta, J. (2011). Arctic plant life. Retrieved from

Goodier, R. (2012). How to make a sack garden. Retrieved from

Green, J. (2006). Genetically modified food. Mankato, MN: Stargazer.

Hillstrom, K. (2012). Genetically modified foods. Farmington Hills, MI: Gale Cengage Learning.

Morgan, S. (2009). The plant cycle. New York, NY: PowerKids.

Morganelli, A. (2007). The biography of tomatoes. St. Catharines, ON: Crabtree.

Robbins, K. (2009). Food for thought: Stories behind the things we eat. New York, NY: Roaring Brook.

Scott, M. & Royston, A. (2008). North America’s most amazing plants. Chicago, IL: Raintree.

Stotlman, R. (1993). Guide to the record trees of British Columbia. Vancouver, BC: Western Canada Wilderness Committee.

Stoltman, R. (1993). Written by the wind. Victoria, BC: Orca.

Stoltman, R. (1996). Hiking the ancient rainforests of British Columbia and Washington. Vancouver, BC: Lone Pine.

Wandera, M. (2015, April 20). Small space, big promise: Sack farming golds potential for poor urban households. In The World Post. Retrieved from

Wood, K. (2014). Urban farm projects. Irvine, CA: I-5 Publishing.