Muller, Gilbert H., author
McGraw-Hill, 1987
Buku Teks
Trimmer, Joseph F., author
Houghton Miffiln, 1983
Koleksi Publik
Ford, Marjorie, author
Longman, 2001
Buku Teks
Connelly, Mark, author
Wadsworth and Cengage Learning, 2013
Buku Teks
St. Martin's Press, 1985
Buku Teks