Jones, Gavin W.
The population of North Sulawesi
Gajah Mada University Press, 1977
 Buku Teks
Indonesia assessment: population and human resources
edited by Gavin W. Jones and Terence H. Hull
Institute od Southeast Asia Studies (ISEAS), 1997
 Buku Teks
Indonesia assessment: population and human resources
edited by Gavin W. Jones and Terence H. Hull
Institute of Southeast Asian Studies, 1997
 Buku Teks
Aris Ananta
Population projection 1995-2025 North Sumatra
Demographic Institute, Faculty of Economics, University of Indonesia, 1995
 Buku Teks
Herodotus
Persian wars. Traslated by George Rawlinson, with an introd. by Francis R.B. Godolphin
The Modern Library, 1942
 Buku Teks