^Fox, Irving P. (1898). The Spatula. The Spatula Publishing Company. p. 653
^Robenalt, James D. (2004). Linking Rings: William W. Durbin and the Magic and Mystery of America. Kent State University Press. p. 19. (ردمك 978-0873388085)
^Pritchard, William Thomas. (1958). This is Magic: Secrets of the Conjurer's Craft. Citadel Press. p. 112
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