APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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