Não informado. (1967). Farm Building News. American Farm Building Services.
Chicago-Zitierstil (17. Ausg.)Não informado. Farm Building News. Iola, Wis: American Farm Building Services, 1967.
MLA-Zitierstil (8. Ausg.)Não informado. Farm Building News. American Farm Building Services, 1967.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.