Rosenfeld, Isadore, author
Random House, 1996
Buku Referensi
Roman, Kenneth
St. Martin's Press , 1976
Buku Teks
Derry, Gregory N., author
Princeton University Press , 1999
Buku Teks
Aalseth, Patricia, author
Jones & Bartlett Learning, 2015
Buku Teks
Marcil, William Matthew, author
Delmar Cengage Learning, 2007
Buku Teks