Παραπομπή σε μορφή APA (7η εκδ.)

Leal Filho, W., O'Loan, K., & Murphy, Z. (1996). A sourcebook for environmental education: A practical review based on the Belgrade charter. Parthenon Publishing Group.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Leal Filho, Walter, K. O'Loan, και Z. Murphy. A Sourcebook for Environmental Education: A Practical Review Based on the Belgrade Charter. New York: Parthenon Publishing Group, 1996.

Παραπομπή σε μορφή MLA (9th εκδ.)

Leal Filho, Walter, et al. A Sourcebook for Environmental Education: A Practical Review Based on the Belgrade Charter. Parthenon Publishing Group, 1996.