Smith, D., & Keyfitz, N. (1977). Mathematical demography (1st edition.). Springer-Verlag.
Cita Chicago Style (17a ed.)Smith, David, y Nathan Keyfitz. Mathematical Demography. 1st edition. Berlín: Springer-Verlag, 1977.
Cita MLA (8a ed.)Smith, David, y Nathan Keyfitz. Mathematical Demography. 1st edition. Springer-Verlag, 1977.
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