APA (7e ed.) Bronvermelding

Eckles, C. (1988). Milk and milk products (8the edn.). Mcgraw Hill.

Chicago (17e ed.) Bronvermelding

Eckles, C. Milk and Milk Products. 8the edn. New York: Mcgraw Hill, 1988.

MLA (9e ed.) Bronvermelding

Eckles, C. Milk and Milk Products. 8the edn. Mcgraw Hill, 1988.