APA (7th ed.) Citation

Mayer, M. (2008). It's Earth Day! HarperFestival.

Chicago Style (17th ed.) Citation

Mayer, Mercer. It's Earth Day! New York: HarperFestival, 2008.

MLA (8th ed.) Citation

Mayer, Mercer. It's Earth Day! HarperFestival, 2008.

Warning: These citations may not always be 100% accurate.