Borrie, W.B., author
Weidenfeld and Nicolson, 1970
Buku Teks
Chen, Kuan I., author
Bookman Associates, 1960
Buku Teks
Keyfitz, Nathan, author
The University of Chicago Press, 1968
Buku Teks
Carr-Saunders, A.M., author
Frank Cass, 1964
Buku Teks
Population Reference Bureau, Inc., 1972
Buku Teks