Nartea, R. N. (1977). Potassium supplying capacity of some coconut soils in the Philippines [microform]. Photoduplication Service. University of the Philippines Library.
Цитирование в стиле Чикаго (17-е изд.)Nartea, Roberto Negranza. Potassium Supplying Capacity of Some Coconut Soils in the Philippines [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Цитирование MLA (9-е изд.)Nartea, Roberto Negranza. Potassium Supplying Capacity of Some Coconut Soils in the Philippines [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.