Foss, Sonja K., compiler
Waveland Press, 1985
Buku Teks
Luxemburg, Jan van
Peter lang, [date of publication not identified]
Buku Teks
edited by William J. Dominik
Routledge, 1997
Buku Teks
Jordan, John E.
Harper & Row, Publishers, 1965
Buku Teks
Winterowd, W. Ross
Holt, Rinehart and Winston, 1968
Buku Teks