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?].
Cytowanie według stylu Chicago (wyd. 17)Iowa State University. Agricultural and Home Economics Experiment Station i Iowa State University. Cooperative Extension Service. Bulletin P. Ames: [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.
Cytowanie według stylu MLA (wyd. 8)Iowa State University. Agricultural and Home Economics Experiment Station i Iowa State University. Cooperative Extension Service. Bulletin P. [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.