Academic Press, 1982
Buku Teks
Keyfitz, Nathan, author
John Wiley & Sons, 1977
Buku Teks
Iannelli, M., author
Society for Industrial and Applied Mathematics, 2005
eBooks
Keyfitz, Nathan, author
Addison-Wesley Publ., 1968
Buku Teks
Aris Ananta, author
Lembaga Demografi Fakultas Eekonomi Universitas Indonesia, 1991
Buku Teks