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?].
শিকাগো স্টাইল (17 তম সংস্করণ) উদ্ধৃতিIowa State University. Agricultural and Home Economics Experiment Station এবং Iowa State University. Cooperative Extension Service. Bulletin P. Ames: [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.
M.L.A (8 ম সংস্করণ) উদ্ধৃতিIowa State University. Agricultural and Home Economics Experiment Station এবং Iowa State University. Cooperative Extension Service. Bulletin P. [Agricultural and Home Economics Experiment Station, Cooperative Extension Service, Iowa State University?], 1959.