APA (7 वां संस्करण) प्रशस्ति पत्र

Mackenzie, F. A. (1921). The mystery of the Daily mail, 1896-1921. Associated Newspapers, Ltd..

शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र

Mackenzie, Frederick Arthur. The Mystery of the Daily Mail, 1896-1921. London: Associated Newspapers, Ltd., 1921.

एमएलए (8वां संस्करण) प्रशस्ति पत्र

Mackenzie, Frederick Arthur. The Mystery of the Daily Mail, 1896-1921. Associated Newspapers, Ltd., 1921.