Sumatra : Indonesia travel guides / editor, Eric M. Oey
Periplus Editions, 1994
Buku Referensi
The New book of knowledge : home and school reading and study guides / editor Whitney Pratt-Coté
Grolier Incorporated, 1997
Buku Referensi
Geoffrey Robertson
Kejahatan terhadap kemanusiaan: perjuangan untuk mewujudkan keadilan global / oleh Geoffrey Robertson; editor, Suhartono
Komisi Nasional Hak Asasi Manusia, 2002
Buku Teks
Li, Ju-Chen
Flowers in the mirror
P. Owen , [1965]
Buku Teks
Guttmann, H. Peter
The international consultant
McGraw-Hill, 1976
Buku Teks