Almendrala, R. M. (1977). The effect of different calcium sources on the growth of mustard (brassica juncea, coss.) and some chemical properties of some Philippine soils [microform]. Photoduplication Service. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAlmendrala, Rodolfo Machado. The Effect of Different Calcium Sources on the Growth of Mustard (brassica Juncea, Coss.) and Some Chemical Properties of Some Philippine Soils [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAlmendrala, Rodolfo Machado. The Effect of Different Calcium Sources on the Growth of Mustard (brassica Juncea, Coss.) and Some Chemical Properties of Some Philippine Soils [microform]. Photoduplication Service. University of the Philippines Library, 1977.