Scharton, Maurice
Allyn and Bacon, 1993
Buku Teks
Flower, Linda
Hancourt Brace Jovanovich, 1981
Buku Teks
Arapoff, Nancy
Holt, Rinehart and Winston, 1970
Buku Teks
Flesch, Rudolf
Harper & Row Publishers, 1962
Buku Teks
Lerner, Marcia
Random House, 2001
Buku Teks