Iowa State University. Agricultural and Home Economics Experiment Station & Iowa State University. Cooperative Extension Service. (1959). Bulletin P. [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?].
Chicago-viite (17. p.)Iowa State University. Agricultural and Home Economics Experiment Station ja Iowa State University. Cooperative Extension Service. Bulletin P. Ames: [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.
MLA-viite (8. p.)Iowa State University. Agricultural and Home Economics Experiment Station ja Iowa State University. Cooperative Extension Service. Bulletin P. [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.