Samuel, Myra L., author
Prentice Hall Inc., 1999
Buku Teks
Corty, Eric W., author
Mosby Elsevier, 2007
Buku Teks
Spatz, Chris, author
Wadsworth and Cengage Learning, 2011
Buku Teks
Sullivan, Michael, III, author
Pearson, 2018
Buku Teks
Samuel, Myra L., author
Pearson - Prentice Hall, 2003
Buku Teks