Castro, E. R. (1997). Computer training for teachers urged. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रCastro, Eddee RH. "Computer Training for Teachers Urged." Manila Bulletin 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रCastro, Eddee RH. "Computer Training for Teachers Urged." Manila Bulletin, 1997.
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