Lindgren, H. C. (1967). Educational psychology in the classroom (3d ed.). Wiley.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLindgren, Henry Clay. Educational Psychology in the Classroom. 3d ed. New York: Wiley, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLindgren, Henry Clay. Educational Psychology in the Classroom. 3d ed. Wiley, 1967.
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