Miller, Roger LeRoy
McGraw-Hill International Book, 1985
Buku Teks
Quirk, James P
Sciece Research Associates, 1983
Buku Teks
Freeman, A. Myrick, 1936-
Harper & Row , 1983
Buku Teks
Nicholson, Walter
Dryden Press, 1994
Buku Teks
Nicholson, Walter
Dryden Press , 1983
Buku Teks