Freeman, Frank S.
Holt, Rinehart and Winston, 1960
Buku Teks
Heyster, Sis, author
Uitgeverij de toort te heemstede, 1954
Buku Teks
Muhammad Kautsar, author
2014
UI - Skripsi (Membership)
Eisenberg, Rafael, author
Diplomatic Press, 1967
Buku Teks
Cohen, John
George Allen and Unwin Ltd., 1972
Buku Teks