APA način citiranja (7. izdanje)

Iowa State College. Agricultural Extension Dept. (1921). Agricultural extension bulletin. The Dept..

Čikaški stil citiranja (17. izdanje)

Iowa State College. Agricultural Extension Dept. Agricultural Extension Bulletin. Ames, Iowa: The Dept., 1921.

MLA način citiranja (8. izdanje)

Iowa State College. Agricultural Extension Dept. Agricultural Extension Bulletin. The Dept., 1921.