Henderson, Harold Gould, author
E. Weyhe, 1939
Buku Referensi
Rumph, Fritz
Berlin Berlin Lankwitz 1932
Buku Teks
Attenborough, David
BBC Worldwide Limited, 2005
Multimedia
Indonesia Finance Today,
Majalah, Jurnal, Buletin
Hamzah Fansuri
Foris Publication, 1986
Buku Teks