Watkins, J. E. (1919). Famous mysteries: Curious and fantastic riddles of human life that have never been solved. John C. Winston Co..
芝加哥风格引文Watkins, John Elfreth. Famous Mysteries: Curious and Fantastic Riddles of Human Life That Have Never Been Solved. Philadelphia: John C. Winston Co., 1919.
MLA引文Watkins, John Elfreth. Famous Mysteries: Curious and Fantastic Riddles of Human Life That Have Never Been Solved. John C. Winston Co., 1919.
警告：这些引文格式不一定是100％准确.