APA (7th ed.) Citation

Reader's Digest Association. (1978). The World's last mysteries. Reader's Digest Association.

Chicago Style (17th ed.) Citation

Reader's Digest Association. The World's Last Mysteries. Pleasantville, N.Y.: Reader's Digest Association, 1978.

MLA (8th ed.) Citation

Reader's Digest Association. The World's Last Mysteries. Reader's Digest Association, 1978.

Warning: These citations may not always be 100% accurate.