APA استشهاد

Caldwell, L. K. (1991). International environmental policy: Emergence and dimensions (2nd ed.). East-West Press.

استشهاد بنمط شيكاغو

Caldwell, Lynton Keith. International Environmental Policy: Emergence and Dimensions. 2nd ed. New Delhi: East-West Press, 1991.

MLA استشهاد

Caldwell, Lynton Keith. International Environmental Policy: Emergence and Dimensions. 2nd ed. East-West Press, 1991.