Retana y Gamboa, W. E. 1. (1974). Bibliografia de Mindanao (epitome) por W. E. Retana [microform]. Photoduplication Services,University of the Philippines Library.
Chicago Style (17th ed.) CitationRetana y Gamboa, Wenceslao Emilio 1862-1924-. Bibliografia De Mindanao (epitome) Por W. E. Retana [microform]. Quezon City: Photoduplication Services,University of the Philippines Library, 1974.
MLA (9th ed.) CitationRetana y Gamboa, Wenceslao Emilio 1862-1924-. Bibliografia De Mindanao (epitome) Por W. E. Retana [microform]. Photoduplication Services,University of the Philippines Library, 1974.
Warning: These citations may not always be 100% accurate.