Tohutoro APA (7th ed.)

Reader's Digest Association. (1996). Great mysteries of the 20th century. Reader's Digest.

Tohutoru Kātū Chicago (17th ed.)

Reader's Digest Association. Great Mysteries of the 20th Century. Pleasantville: Reader's Digest, 1996.

Tohutoro MLA (9th ed.)

Reader's Digest Association. Great Mysteries of the 20th Century. Reader's Digest, 1996.