Wonnacott, Thomas H., 1935-
John Wiley & Son , 1969
Buku Teks
Hamburg, Morris
Harcourt Brace Jovanovick, 1985
Buku Teks
Furlong, Nancy E.
Harcourt College Publishers, 2000
Buku Teks
Sobol, Marion Gross
McGraw-Hill , 1983
Buku Teks
Gregory, Derek
McGraw-Hill , 1978
Buku Teks