Bailey, Edward P., author
Charles E. Merrill, 1984
Buku Teks
Mundhenk, Robert T., author
Houghton Mifflin, 1978
Buku Teks
Arapoff, Nancy
Holt, Rinehart and Winston, 1970
Buku Teks
Flesch, Rudolf
Harper & Row Publishers, 1962
Buku Teks
Ruggiero, Vincent Ryan, author
Alfred Publishing Co., Inc., 1981
Buku Teks