Lange, Oktavii Konstantinovich, 1883-1975
The Principia Press,Inc., 1944
Buku Teks
McCloskey, Donald N., author
Macmillan, 1985
Buku Teks
Ryotaro Iochi
Kinokuniya Book-store Co. Ltd, 1964
Buku Teks
Hari Sukarno, author
1995
UI - Tesis (Membership)
Artikel Jurnal