APA (7 वां संस्करण) प्रशस्ति पत्र

Lefferts, W. (1924). Our country's leaders: And what they did for America. J.B. Lippincott Co..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Lefferts, Walter. Our Country's Leaders: And What They Did for America. Philadelphia : Chicago [etc.]: J.B. Lippincott Co., 1924.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Lefferts, Walter. Our Country's Leaders: And What They Did for America. J.B. Lippincott Co., 1924.