Reader's Digest Association. (1996). Great mysteries of the 20th century. Reader's Digest.
Style de citation Chicago (17e éd.)Reader's Digest Association. Great Mysteries of the 20th Century. Pleasantville: Reader's Digest, 1996.
Style de citation MLA (9e éd.)Reader's Digest Association. Great Mysteries of the 20th Century. Reader's Digest, 1996.
Attention : ces citations peuvent ne pas être correctes à 100%.