Bartolini, P. U. (1980). The influence of seed quality on crop performance in soybean and sorghum [microform]. Photoduplication Service. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBartolini, 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.
एमएलए (9वां संस्करण) प्रशस्ति पत्रBartolini, Perfecto Urdaneta. The Influence of Seed Quality on Crop Performance in Soybean and Sorghum [microform]. Photoduplication Service. University of the Philippines Library, 1980.
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