Cita APA (7a ed.)

California Weed Conference. (1989). Principles of weed control in California (2nd. ed.). Thomson.

Cita Chicago Style (17a ed.)

California Weed Conference. Principles of Weed Control in California. 2nd. ed. Fresno: Thomson, 1989.

Cita MLA (8a ed.)

California Weed Conference. Principles of Weed Control in California. 2nd. ed. Thomson, 1989.