Rajagukguk, Omas Bulan
Contraceptive choice in Indonesia : 1987 and 1981
Journal of Population, 1995
 Artikel Jurnal
Public choice & rural development
resources for the future, 1981
 Buku Teks
Dunphy, Dexter C.
Organizational change by choice
McGraw-Hill, 1985
 Buku Teks
Jähne, Johannes
Construction of roads and tracks in rural areas
Leipzig, 1964
 Buku Teks
Technological change and the rural environment
edited by Philip Lowe, Terry Marsden, Sarah Whatmore
David Fulton, 1990
 Buku Teks