Lewis, William Arthur, 1915-, author
Harper & Row, 1966
Buku Teks
Boeke, J.H., author
Tjeenk Willink & Zoon, 1963
Buku Teks
Keilhau, Wilhelm, author
George Allen & Unwin, 1951
Buku Teks
PWN-Polish Scientiic Publishers, 1968
Buku Teks
Kurnia Chairi, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2007
UI - Tesis (Membership)