Beekman, George, author
Pretince Hall, 2002
Buku Teks
Gunton, Tony, author
NCC Blackwell, 1993
Buku Teks
Steinberg, Esther R., author
Erlbaum Associates, 1991
Buku Teks
editor-in-chief, Sybil P. Parker
McGraw-Hill, 1987
Buku Referensi
Katzan, Harry, Jr., author
Van Nostrand Reinhold , 1975
Buku Teks