Mangahas, M. K. (1976). A cross-sectional study of the diffuion of new rice varities in Central Luzon [microform]. Photoduplication Service,University of the Philippines.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMangahas, Mahar Kelly. A Cross-sectional Study of the Diffuion of New Rice Varities in Central Luzon [microform]. Quezon City: Photoduplication Service,University of the Philippines, 1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रMangahas, Mahar Kelly. A Cross-sectional Study of the Diffuion of New Rice Varities in Central Luzon [microform]. Photoduplication Service,University of the Philippines, 1976.
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