Cita APA (7th ed.)

Black, M., Haley, R., & Kellert, S. R. (1997). Macmillan encyclopedia of the environment. Macmillan Library Reference USA.

Cita Chicago (17th ed.)

Black, Matthew, Richard Haley, i Stephen R. Kellert. Macmillan Encyclopedia of the Environment. New York: Macmillan Library Reference USA, 1997.

Cita MLA (9th ed.)

Black, Matthew, et al. Macmillan Encyclopedia of the Environment. Macmillan Library Reference USA, 1997.