Pressat, Roland, author
Methuen, 1978
Buku Teks
by William Brass ... [et al.]
Princenton University Press, 1968
Buku Teks
Keyfitz, Nathan, author
John Wiley & Sons, 1977
Buku Teks
Jain, Surender Kumar, author
The Australia National University , 1982
Buku Teks
Barnes & Noble, 1971
Buku Teks