Calderon, A. B. (1976). An investigation of The Sentinel, National Catholic Weekly, as a mass medium of communication, 1949-1968 [microform]. Photoduplication Service, University of the Philippines Library.
Chicago Style (17th ed.) CitationCalderon, Aurelio B. An Investigation of The Sentinel, National Catholic Weekly, as a Mass Medium of Communication, 1949-1968 [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1976.
MLA (9th ed.) CitationCalderon, Aurelio B. An Investigation of The Sentinel, National Catholic Weekly, as a Mass Medium of Communication, 1949-1968 [microform]. Photoduplication Service, University of the Philippines Library, 1976.
Warning: These citations may not always be 100% accurate.