Simons, Herbert W., author
Randon House, 1976
Buku Teks
Simons, Herbert W., author
Randon House, 1976
Buku Teks
Roos, Raymon S., author
Prentice-Hall, 1985
Buku Teks
Dori Wuwur Hendrikus, author
Kanisius, 1991
Buku Teks
Vancil, David L
Allyn and Bacon, 1993
Buku Teks