APA (7th ed.) Citation
Reader's Digest. (1978). The World's last mysteries (ed.). Reader's Digest Association.
Chicago Style (17th ed.) Citation
Reader's Digest. The World's Last Mysteries. ed. New York: Reader's Digest Association, 1978.
MLA (9th ed.) Citation
Reader's Digest. The World's Last Mysteries. ed. Reader's Digest Association, 1978.
Warning: These citations may not always be 100% accurate.