Keet, Ernest E.
Addison-Wesley Publishing , 1985
Buku Teks
Keet, Ernest E., author
Addison-Wesley, 1984
Buku Teks
Harris, Thorne D., author
Prentice-Hall, 1984
Buku Teks
Ronan, Jana Smith, author
Libraries Unlimited, 2003
Buku Teks
Bernacchi, Richard L., author
Brown and Company, 1974
Buku Teks