Cita APA (7th ed.)

Lampkin, N. (1990). Organic farming (1a. ed.). Farming Press.

Cita Chicago (17th ed.)

Lampkin, Nicolas. Organic Farming. 1a. ed. Ipswich: Farming Press, 1990.

Cita MLA (9th ed.)

Lampkin, Nicolas. Organic Farming. 1a. ed. Farming Press, 1990.