APA (7e ed.) Bronvermelding

Beder, S. (2007). Environmental principles and policies: An interdisciplinary introduction (1st South Asian ed.). Earthscan.

Chicago (17e ed.) Bronvermelding

Beder, Sharon. Environmental Principles and Policies: An Interdisciplinary Introduction. 1st South Asian ed. London: Earthscan, 2007.

MLA (9e ed.) Bronvermelding

Beder, Sharon. Environmental Principles and Policies: An Interdisciplinary Introduction. 1st South Asian ed. Earthscan, 2007.