APA (7th ed.) Citation

Henderson, K., Easterling, J., & Newton-John, O. (2012). 50 simple steps to save the world's rainforests. Freedom Press.

Chicago Style (17th ed.) Citation

Henderson, Kim, John Easterling, and Olivia Newton-John. 50 Simple Steps to Save the World's Rainforests. Topanga, CA: Freedom Press, 2012.

MLA (9th ed.) Citation

Henderson, Kim, et al. 50 Simple Steps to Save the World's Rainforests. Freedom Press, 2012.