APA-referens (7:e uppl.)
ebrary, Inc. (1988). Understanding agriculture: New directions for education. National Academy Press.
Chicago-referens (17:e uppl.)
ebrary, Inc. Understanding Agriculture: New Directions for Education. Washington, D.C.: National Academy Press, 1988.
MLA-referens (9:e uppl.)
ebrary, Inc. Understanding Agriculture: New Directions for Education. National Academy Press, 1988.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.