Ardales, V. B. (2001). Basic concepts and methods in research (2nd ed.). Concerns.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रArdales, Venancio B. Basic Concepts and Methods in Research. 2nd ed. Iloilo City: Concerns, 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रArdales, Venancio B. Basic Concepts and Methods in Research. 2nd ed. Concerns, 2001.
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