McKillup, Steve, author
Cambridge University Press, 2011
Buku Teks
Linneman, Thomas J., author
Routledge, 2018
Buku Teks
Elifson, Kirk W., 1943-, author
McGraw-Hill, 1990
Buku Teks
Picconi, Mario J.
Harper Collins, 1995
Buku Teks
Gravetter, Frederick J., author
Wadsworth and Cengage Learning, 2009
Buku Teks