Murphy, G., & Dale, L. A. (1961). Challenge of psychical research: A primer of parapsychology. Harpers.
芝加哥风格引文Murphy, Gardner, 与 Laura A. Dale. Challenge of Psychical Research: A Primer of Parapsychology. New York: Harpers, 1961.
MLA引文Murphy, Gardner, 与 Laura A. Dale. Challenge of Psychical Research: A Primer of Parapsychology. Harpers, 1961.
警告：这些引文格式不一定是100％准确.