APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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