Cita APA (7a ed.)

Harris, A., Harrison, C., & Smithson, P. (1972). The land and conservation. Grosset and Dunlap.

Cita Chicago Style (17a ed.)

Harris, Anne, Carolyn Harrison, y Peter Smithson. The Land and Conservation. New York: Grosset and Dunlap, 1972.

Cita MLA (9a ed.)

Harris, Anne, et al. The Land and Conservation. Grosset and Dunlap, 1972.