Kenner, Carole, author
Mosby, 2004
Buku Teks
DeWitt, Anthony L., author
Jones & Bartlett Learning, 2010
Buku Teks
Bernstein, Lewis
Norwalk Appletton century crofts , 1985
Buku Teks
Kennamer, Mike, author
Thomson/Delmar Learning, 2005
Buku Teks
Bradshaw, Peter L., author
Sage, 2004
Buku Teks