Tiamson, A. T., & Retana, W. E. (1970). Mindanao-Sulu bibliography: Containing published, unpublished manuscripts, and works-in-progress : a preliminary survey and W. E. Retana's bibliografia de Mindanao (1894). Ateneo de Davao.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTiamson, Alfredo T., और W. E. Retana. Mindanao-Sulu Bibliography: Containing Published, Unpublished Manuscripts, and Works-in-progress : A Preliminary Survey and W. E. Retana's Bibliografia De Mindanao (1894). Davao City: Ateneo de Davao, 1970.
एमएलए (9वां संस्करण) प्रशस्ति पत्रTiamson, Alfredo T., और W. E. Retana. Mindanao-Sulu Bibliography: Containing Published, Unpublished Manuscripts, and Works-in-progress : A Preliminary Survey and W. E. Retana's Bibliografia De Mindanao (1894). Ateneo de Davao, 1970.
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