Desjardins, Joseph, author
McGraw-Hill, 2003
Buku Teks
Desjardins, Joseph, author
McGraw-Hill, 2014
Buku Teks
Jackson, Jennifer
Blackwell Publishers, 1996
Buku Teks
Velasquez, Manuel G., author
Pearson, 2006
Buku Teks
Stanwick, Peter A., author
Pearson, 2009
Buku Teks