Cita APA (7th ed.)

Aldrich, R. J. (1984). Weed-crop ecology. Breton Publishers.

Cita Chicago (17th ed.)

Aldrich, Richard James. Weed-crop Ecology. North Scituate, Mass.: Breton Publishers, 1984.

Cita MLA (9th ed.)

Aldrich, Richard James. Weed-crop Ecology. Breton Publishers, 1984.