APA-referens

Weller, J. B., & Willetts, S. L. (1977). Farm wastes management. Crosby lockwood staples.

Chicago-stil citat

Weller, J B., och S L. Willetts. Farm Wastes Management. London: Crosby lockwood staples, 1977.

MLA-referens

Weller, J B., och S L. Willetts. Farm Wastes Management. Crosby lockwood staples, 1977.