Kohout, Frank J.
John Wiley & Sons, 1974
Buku Teks
Blackwell Publishers, Inc, 1999
Buku Teks
Kosso, Peter
Cambridge University Press, 1992
Buku Teks
edited by Richard Boyd, Philip Gasper, and J. D. Trout
Bradford Book, 1997
Buku Teks
edited by David Garland and Richard Sparks
Oxford University Press, 2000
Buku Teks