APA-referens

Troeh, F. R. (2003). Dictionary of agricultural and environmental science. Ames, Iowa: Iowa State Press.

Chicago-stil citat

Troeh, Frederick R. Dictionary of Agricultural and Environmental Science. Ames, Iowa: Iowa State Press, 2003.

MLA-referens

Troeh, Frederick R. Dictionary of Agricultural and Environmental Science. Ames, Iowa: Iowa State Press, 2003.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.