Coale, Ansley J.
Academic Press, 1983
Buku Teks SO
Palmore, James A.
East West Center Press, 1987
Buku Teks
Shapiro, Sam
Harvard University Press, 1968
Buku Teks SO
Mesle, France
Springer, 2012
eBooks
The University of Nagoya Press, 1984
Buku Teks SO