editor, Donald Watson
McGraw-Hill, 2000
Buku Referensi
Donald Watson, editor
McGraw-Hill, 2000
Buku Referensi
Watson, Donald ; Crosbie, Michael J. ; Callender, John Hancock, editor
McGraw - Hill, 1997
Buku Referensi
Broudy, Charles E.
McGraw-Hill , 1995
Buku Teks
editors, Joseph de Chiara, John Handcock Callender
McGraw-Hill International Book, 1983
Buku Referensi