Παραπομπή σε μορφή APA (7η εκδ.)

Postma, D. W. (2006). Why Care for Nature?: In Search of an Ethical Framework for Environmental Responsibility and Education. Springer.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Postma, Dirk Willem. Why Care for Nature?: In Search of an Ethical Framework for Environmental Responsibility and Education. Dordrecht: Springer, 2006.

Παραπομπή σε μορφή MLA (8th εκδ.)

Postma, Dirk Willem. Why Care for Nature?: In Search of an Ethical Framework for Environmental Responsibility and Education. Springer, 2006.