APA (7 वां संस्करण) प्रशस्ति पत्र

Morton, R. L. (1937). Teaching arithmetic in elementary school. Silver Burdett company.

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Morton, Robert Lee. Teaching Arithmetic in Elementary School. New York, boston [etc.]: Silver Burdett company, 1937.

एमएलए (9वां संस्करण) प्रशस्ति पत्र

Morton, Robert Lee. Teaching Arithmetic in Elementary School. Silver Burdett company, 1937.