Cita APA

Murphy, G., & Dale, L. A. (1961). Challenge of psychical research: A primer of parapsychology. Harpers.

Citación estilo Chicago

Murphy, Gardner, and Laura A. Dale. Challenge of Psychical Research: A Primer of Parapsychology. New York: Harpers, 1961.

Cita MLA

Murphy, Gardner, and Laura A. Dale. Challenge of Psychical Research: A Primer of Parapsychology. Harpers, 1961.

Warning: These citations may not always be 100% accurate.