North-Holland, 1972
Buku Teks
Todaro, Michael P., author
Bumi Aksara, 1995
Buku Teks
Bagchi, Amiya Kumar, author
Cambridge University Press , 1984
Buku Teks
Mensch, Barbara S., author
Population Council, 1998
Buku Teks
Martin Khor Kok Peng
Gramedia Pustaka Utama, 1993
Buku Teks