Booth, David, author
Taylor and Francis, 1994
Buku Teks
Arlin, Marian Thompson
Buku Teks
Whitney, Ellie, author
Wadsworth and Cengage Learning, 2013
Buku Teks
Thompson, Janice, author
Pearson, 2016
Buku Teks
Wardlaw, Gordon M., 1912-1989, author
McGraw-Hill, 2004
Buku Teks