Nanney, T. Ray, author
Prentice-Hall, 1981
Buku Teks
Dyck, V.A., author
Reston, 1984
Buku Teks
Etter, Delores M. (Delores Maria), 1947-, author
Benjamin/Cummings, 1984
Buku Teks
Kreitzberg, Charles B., author
Harcourt Brace Javanovich, 1982
Buku Teks
Ellis, T.M.R., author
Addison-Wesley Pub., 1982
Buku Teks