Cita APA (7a ed.)

Engerl, J. R., & Engel, J. G. (1990). Ethics of environment and development: Global challenge, international response. University of Arizona Press.

Cita Chicago Style (17a ed.)

Engerl, J. Ronald, y Joan Gibb Engel. Ethics of Environment and Development: Global Challenge, International Response. Tucson (Ariz.): University of Arizona Press, 1990.

Cita MLA (9a ed.)

Engerl, J. Ronald, y Joan Gibb Engel. Ethics of Environment and Development: Global Challenge, International Response. University of Arizona Press, 1990.