Grauer, Robert T.
Prentice-Hall, 1978
Buku Teks
Litecky, Charles R., author
McGraw-Hill , 1987
Buku Teks
Litecky, Charles R., author
McGraw-Hill, 1987
Buku Teks
Smith, Marilyn Z., author
Houghton-Mifflin, 1974
Buku Teks
Katzan, Harry, Jr., author
Auerbach, 1972
Buku Teks