APA (7th ed.) Citation

MacKenzie, A. (1970). The unexplained: Some strange cases in psychical research (Popular Library ed.). Popular Library.

Chicago Style (17th ed.) Citation

MacKenzie, Andrew. The Unexplained: Some Strange Cases in Psychical Research. Popular Library ed. New York: Popular Library, 1970.

MLA (8th ed.) Citation

MacKenzie, Andrew. The Unexplained: Some Strange Cases in Psychical Research. Popular Library ed. Popular Library, 1970.

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