Gapasin, C. M. (1973). The preservice and inservice educational needs of vocational agriculture teachers in the Philippines. University Microfilms.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGapasin, Celedonio Madayag. The Preservice and Inservice Educational Needs of Vocational Agriculture Teachers in the Philippines. Ann Arbor: University Microfilms, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रGapasin, Celedonio Madayag. The Preservice and Inservice Educational Needs of Vocational Agriculture Teachers in the Philippines. University Microfilms, 1973.
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