Ducusin, R. M. (1977). Separation leaching of an arsenical copper concentrate [microform]. Photoduplication Service. University of the Philippines Library.
Цитирование в стиле Чикаго (17-е изд.)Ducusin, Ruben M. Separation Leaching of an Arsenical Copper Concentrate [microform]. Quezon City: Photoduplication Service. University of the Philippines Library, 1977.
Цитирование MLA (9-е изд.)Ducusin, Ruben M. Separation Leaching of an Arsenical Copper Concentrate [microform]. Photoduplication Service. University of the Philippines Library, 1977.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.