Brondal, V.
Kopenhagen Munksgaard 1943
Buku Teks
Lasserre, E., author
Lausanne Librairie Payot 1959
Buku Teks
Barbier, Pierre
Gallimard , 1959
Buku Teks
Andi Nur`aida Angriyani, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2005
UI - Tesis (Membership)
Reinhard, Marcel
Paris Hachette 1946
Buku Teks