APA-viite (7. p.)

National food review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic resource].

Chicago-viite (17. p.)

National Food Review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic Resource].

MLA-viite (9. p.)

National Food Review Economics, Statistics, and Cooperatives Service, U.S. Department of Agriculture. [electronic Resource].

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.