Cita APA

California Certified Organic Farmers, & California Certified Organic Farmers. (1991). 1991 certification handbook. Santa Cruz, Calif.: California Certified Organic Farmers.

Citación estilo Chicago

California Certified Organic Farmers, y California Certified Organic Farmers. 1991 Certification Handbook. Santa Cruz, Calif.: California Certified Organic Farmers, 1991.

Cita MLA

California Certified Organic Farmers, y California Certified Organic Farmers. 1991 Certification Handbook. Santa Cruz, Calif.: California Certified Organic Farmers, 1991.

Precaución: Estas citas no son 100% exactas.