Cita APA (7th ed.)

Robbins, L. (1952). An essay on the nature & significance of eco.sc (2nd rev.). Macmillan.

Cita Chicago (17th ed.)

Robbins, Liohel. An Essay on the Nature & Significance of Eco.sc. 2nd rev. London: Macmillan, 1952.

Cita MLA (9th ed.)

Robbins, Liohel. An Essay on the Nature & Significance of Eco.sc. 2nd rev. Macmillan, 1952.