Lewis, David
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Buku Teks
A. Alim
M. Alim : available at Ideal Library, 1974
Buku Teks
Faaland, Just
Dacca C. Hurst and University Press, 1976
Buku Teks
Journal of Population, 13 () 2007 : 47-60, 2007
Artikel Jurnal
Rahman, Harisur
Palgrave Macmillan, 2020
Buku Teks