Jones, Gavin W.
The population of North Sulawesi
Gajah Mada University Press, 1977
 Buku Teks SO
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
The population crisis and the use of world resources
edited by Stuart Mudd
Indiana University Press , 1964
 Buku Teks SO
Aris Ananta
Population projection 1995-2025 North Sumatra
Demographic Institute, Faculty of Economics, University of Indonesia, 1995
 Buku Teks