Islam, K. A. (1977). Assessing fertility status of soils deposited by flood, using soybean, Glycine Max (L) Merrill, as test crop [microform]. Photoduplication Service, University of the Philippines Library.
Chicago-referens (17:e uppl.)Islam, Khwaja Akhtar-ul. Assessing Fertility Status of Soils Deposited by Flood, Using Soybean, Glycine Max (L) Merrill, as Test Crop [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1977.
MLA-referens (9:e uppl.)Islam, Khwaja Akhtar-ul. Assessing Fertility Status of Soils Deposited by Flood, Using Soybean, Glycine Max (L) Merrill, as Test Crop [microform]. Photoduplication Service, University of the Philippines Library, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.