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-viite (17. p.)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-viite (9. p.)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.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.