Lawrence, Richard, author
Sage, 2008
Buku Teks
edited James E. Teele
F.E. Peacock, 1970
Buku Teks
Giallombardo, Rose, author
John Wiley & Sons, 1982
Buku Teks
Rubin, H. Ted, author
McGraw-Hill, 1985
Buku Teks
Lundman, Richard J., author
Oxford University Press, 1993
Buku Teks