Keck, Robert W., author
Addison-Wesley, 2000
Buku Teks
Keck, Robert W
Addison Wesley Longman , 2000
Buku Teks
Mader, Sylvia S., author
McGraw-Hill , 1998
Buku Teks
Case, James F., author
Macmillan, 1979
Buku Teks
Ritchie, Donald D., author
Addison-Wesley, 1983
Buku Teks