James D. Mallory, Stanley C. Baldwin, The kink and I: a psychiatrist's guide to untwisted living, 1973, p. 64
Richard W. Rousseau, Christianity and Judaism: the deepening dialogue (1983), p. 112
Postmodern theology: Christian faith in a pluralist world, Harper & Row, 1989 [۱]. Joseph C. Aldrich, Life-style evangelism: crossing traditional boundaries to reach the unbelieving world , 1983 [۲]