Cita APA (7th ed.)
(1978). The world's last mysteries. Reader's Digest Association.
Cita Chicago (17th ed.)
The World's Last Mysteries. New York: Reader's Digest Association, 1978.
Cita MLA (9th ed.)
The World's Last Mysteries. Reader's Digest Association, 1978.
Atenció: Aquestes cites poden no estar 100% correctes.