Weiss, Joseph
Wadsworth, 2009
Buku Teks
Carroll, Archie B.
Thomson , 2003
Buku Teks
Freeman, R. Edward
Cambridge University Press, 2018
Buku Teks
Boutilier, Robert, 1953-2003
Businessexpert Press, 2012
Buku Teks
Baron, David P.
Prentice-Hall, 2000
Buku Teks