APA (7 वां संस्करण) प्रशस्ति पत्र

Preston, R. C., & Herman, W. L. (1981). Teaching social studies in the elementary school (5th ed.). Holt, Rinehart, and Winston.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Preston, Ralph Clausius, और Wayne L. Herman. Teaching Social Studies in the Elementary School. 5th ed. New York: Holt, Rinehart, and Winston, 1981.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Preston, Ralph Clausius, और Wayne L. Herman. Teaching Social Studies in the Elementary School. 5th ed. Holt, Rinehart, and Winston, 1981.