APA-referens

Roth, L. (1977). Introduction to agricultural engineering. Avi Publishing company Inc.

Chicago-stil citat

Roth, L.O. Introduction to Agricultural Engineering. Connecticut: Avi Publishing company Inc, 1977.

MLA-referens

Roth, L.O. Introduction to Agricultural Engineering. Avi Publishing company Inc, 1977.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.