APA-viite

Keyfitz, N. (1977). Applied mathematical demography. Lavaran Elben Assts.

Chicago-tyylinen lähdeviittaus

Keyfitz, Nathan. Applied Mathematical Demography. New York: Lavaran Elben Assts, 1977.

MLA-viite

Keyfitz, Nathan. Applied Mathematical Demography. Lavaran Elben Assts, 1977.