Reader's Digest Association. (1996). Great mysteries of the 20th century. Reader's Digest.
芝加哥风格引文Reader's Digest Association. Great Mysteries of the 20th Century. Pleasantville: Reader's Digest, 1996.
MLA引文Reader's Digest Association. Great Mysteries of the 20th Century. Reader's Digest, 1996.
警告：这些引文格式不一定是100％准确.