Davidson, Melvin, author
Hougtton-Mifflin, 1973
Buku Teks
Conway, Richard, author
Winthrop Publishers, 1973
Buku Teks
Hughes, Joan K., author
John Wiley & Sons, 1979
Buku Teks
Hughes, Joan K., author
John Wiley & Sons, 1981
Buku Teks
Weinberg, Gerald, author
John Wiley & Sons, 1973
Buku Teks