APA (7. basım) Alıntı

Berck, P., & Helfand, G. E. (2011). The economics of the environment. PHI Learning.

Chicago Style (17. basım) Atıf

Berck, Peter, ve Gloria E. Helfand. The Economics of the Environment. New Delhi: PHI Learning, 2011.

MLA (9th ed.) Atıf

Berck, Peter, ve Gloria E. Helfand. The Economics of the Environment. PHI Learning, 2011.