APA (7th ed.) Citation

Enz, J., & Diffenderfer, S. (1994). Ecology: Learning To Love Our Planet. A Self-Directed Learning Experience. Grades K-8.

Chicago Style (17th ed.) Citation

Enz, Judith, and Susan Diffenderfer. Ecology: Learning To Love Our Planet. A Self-Directed Learning Experience. Grades K-8. 1994.

MLA (9th ed.) Citation

Enz, Judith, and Susan Diffenderfer. Ecology: Learning To Love Our Planet. A Self-Directed Learning Experience. Grades K-8. 1994.