Burt, Brian A., author
An academic Internet Publishers, 2007
Buku Teks
edited by Ralph M. Kramer and Harry Specht
Prentice-Hall, 1969
Buku Teks
edited by Ralph M. Kramer, Harry Specht
Prentice-Hall, 1983
Buku Teks
editors, Fred M. Cox ... [and others]
F.E. Peacock, 1977
Buku Teks
Sage Publications, 2012
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