Bartolini, P. U. (1980). The influence of seed quality on crop performance in soybean and sorghum [microform]. Photoduplication Service. University of the Philippines Library.
Citazione stile Chigago Style (17a edizione)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.
Citatione MLA (9a ed.)Bartolini, Perfecto Urdaneta. The Influence of Seed Quality on Crop Performance in Soybean and Sorghum [microform]. Photoduplication Service. University of the Philippines Library, 1980.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.