Edited by Christopher P. Nemeth
VT : Ashgate, 2008
Buku Teks
Pritchard, Peter.,
Oxford University Press, 1994
Buku Teks
Weiss, Donna, author
Jones & Bartlett Learning, 2014
Buku Teks SO
Bruhn, John G., author
Charles C. Thomas, 1993
Buku Teks
Sarah G. Dean, Richard J. Siegert, William J. Taylor.
Wiley-Blackwell, 2012
Buku Teks