Cita APA (7a ed.)

Smith, D., & Keyfitz, N. (1977). Mathematical demography: Selected papers. Springer.

Cita Chicago Style (17a ed.)

Smith, David, y Nathan Keyfitz. Mathematical Demography: Selected Papers. Berlin [u.a.]: Springer, 1977.

Cita MLA (8a ed.)

Smith, David, y Nathan Keyfitz. Mathematical Demography: Selected Papers. Springer, 1977.