APA (7e ed.) Bronvermelding

Bartolini, P. U. (1980). The influence of seed quality on crop performance in soybean and sorghum [microform]. Photoduplication Service. University of the Philippines Library.

Chicago (17e ed.) Bronvermelding

Bartolini, Perfecto Urdaneta. The Influence of Seed Quality on Crop Performance in Soybean and Sorghum [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1980.

MLA (9e ed.) Bronvermelding

Bartolini, Perfecto Urdaneta. The Influence of Seed Quality on Crop Performance in Soybean and Sorghum [microform]. Photoduplication Service. University of the Philippines Library, 1980.