Abood, Richard R., author
Jones and Bartlett Learning, 2014
Buku Teks
Feinberg, Debra B., author
McGraw-Hill, 2008
Buku Teks
Garrison, Marsha, author
Thomson/West, 2009
Buku Teks
Wood, William
Percival Marshall, 1949
Buku Teks
Epstein, Adam, author
Pearson/Prentice Hall, 2006
Buku Teks