Hazewinkel, Aart, author
J.B. Wolters, 1967
Buku Teks
Morris, J. Walker
Heinemann , 1973
Buku Teks
Armstrong, Micahel, author
Kogan Page, 2005
Buku Teks
Armstrong, Micahel, author
Kogan Page, 2005
Buku Teks
Polse, Frans
Crest Publishing House, 1999
Buku Teks