Παραπομπή σε μορφή APA (7η εκδ.)

Wilke, R. J. (1997). Environmental education teacher resource handbook: A practical guide for K-12 environmental education. Corwin Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Wilke, Richard J. Environmental Education Teacher Resource Handbook: A Practical Guide for K-12 Environmental Education. Thousand Oaks, California: Corwin Press, 1997.

Παραπομπή σε μορφή MLA (9th εκδ.)

Wilke, Richard J. Environmental Education Teacher Resource Handbook: A Practical Guide for K-12 Environmental Education. Corwin Press, 1997.