APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

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