APA Alıntı

Engel, J. R. E., & Petersen, J. D. I. (1990). Ethics of environment and development: Global challenge international response.

Chicago Stili Alıntı

Engel, J Ronald; Ed, ve John D; Ill Petersen. Ethics of Environment and Development: Global Challenge International Response. London, Belhaven Press, 1990.

MLA Alıntı

Engel, J Ronald; Ed, ve John D; Ill Petersen. Ethics of Environment and Development: Global Challenge International Response. 1990.