Haks, Leo
Archipelago Press , 1995
Buku Referensi
Agus Wirahadikusumah ... [and others]; penyunting, Atmadji Sumarkidjo, Stella Warouw, Iswanti
Pustaka Sinar Harapan, 1999
Buku Teks
Arndt, Heinz Wolfgang, 1915-2002
LP3ES , 1987
Buku Teks
Arndt, Heinz Wolfgang, 1915-2002
LP3ES, 1983
Buku Teks
Mohammad Hatta, 1902-1980
Cornell University Press, 1957
Buku Teks