APA (7 वां संस्करण) प्रशस्ति पत्र

Dudge, R. E., & Kirchwey, C. B. (1913). The teaching of geography in elementary schools. Rand, McNally.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Dudge, Richard Elwood, और Clara Barbara Kirchwey. The Teaching of Geography in Elementary Schools. Chicago: Rand, McNally, 1913.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Dudge, Richard Elwood, और Clara Barbara Kirchwey. The Teaching of Geography in Elementary Schools. Rand, McNally, 1913.