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