Flower, Linda, author
Hancourt Brace Jovanovich, 1981
Buku Teks
Arapoff, Nancy
Holt, Rinehart and Winston, 1970
Buku Teks
McCrimmon, James M.
Houghton Miffiln, 1963
Buku Teks
Flesch, Rudolf
Harper & Row Publishers, 1962
Buku Teks
Lerner, Marcia, author
Random House, 2001
Buku Teks