Cita APA (7a ed.)

Stapledon, G., & Waller, R. (1980). Human ecology (London, 1964 repr.). Univ. Microfilms International.

Cita Chicago Style (17a ed.)

Stapledon, George, y Robert Waller. Human Ecology. London, 1964 repr. Ann Arbor, Mich: Univ. Microfilms International, 1980.

Cita MLA (9a ed.)

Stapledon, George, y Robert Waller. Human Ecology. London, 1964 repr. Univ. Microfilms International, 1980.