Johansen, Leif
North-Holland, 1974
Buku Teks
Coale, Ansley J.
Princeton University Press, 1961
Buku Teks
Coale, Ansley J.
Princeton University Press, 1958
Buku Teks
Coale, Ansley J.
Princeton University PRess, 1972
Buku Teks
Wilson, Charles
Cassell, 1970
Buku Teks