David, Fred R., author
Pearson, 2009
Buku Teks
Velasquez, Manuel G., author
Pearson, 2006
Buku Teks
Thompson, Arthur A., 1940-, author
Irwin, 1996
Buku Teks
David, Fred R., author
Prentice-Hall, 2001
Buku Teks
Thompson, Arthur A., 1940-, author
McGraw-Hill/Irwin, 2003
Buku Teks