NATIONAL SOYBEAN CROP. (1947). SOYBEAN FARMING.
Chicago Style aipamenaNATIONAL SOYBEAN CROP. SOYBEAN FARMING. 1947.
MLA aipamenaNATIONAL SOYBEAN CROP. SOYBEAN FARMING. 1947.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.
APA aipamena