Hipple, T. W. (1970). Secondary school teaching: Problems and methods. Goodyear Pub.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHipple, Theodore W. Secondary School Teaching: Problems and Methods. Sta Monica, Calif: Goodyear Pub, 1970.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHipple, Theodore W. Secondary School Teaching: Problems and Methods. Goodyear Pub, 1970.
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