Safian, Shelly C., author
Delmar, Cengage Learning, 2009
Buku Teks
Harrison, Carlene, author
Delmar Cengage Learning, 2013
Buku Teks
Harrington, Michael, author
Jones & Bartlett Learning, 2015
Buku Teks
edited, Sharon A. Shueman, Warwick G. Troy and Samuel L. Mayhugh
Charles C. Thomas, 1994
Buku Teks
Katz, Rebecca, author
Jones Bartlett Learning,, 2013
Buku Teks