Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (8th ed.)

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