APA (7e ed.) Bronvermelding

O'Connor, J., Ivanov, A., Ivanov, O., & Preiss-Glasser, R. (2010). Every day is Earth Day. Harper.

Chicago (17e ed.) Bronvermelding

O'Connor, Jane, A. Ivanov, O. Ivanov, en Robin Preiss-Glasser. Every Day Is Earth Day. New York: Harper, 2010.

MLA (8e ed.) Bronvermelding

O'Connor, Jane, et al. Every Day Is Earth Day. Harper, 2010.