Cita APA (7a ed.)

Smith, T. L., & Zopf, P. E. (1970). Demography: Principles and methods. F. A. Davis Co..

Cita Chicago Style (17a ed.)

Smith, T. Lynn, y Paul E. Zopf. Demography: Principles and Methods. Philadelphia: F. A. Davis Co., 1970.

Cita MLA (9a ed.)

Smith, T. Lynn, y Paul E. Zopf. Demography: Principles and Methods. F. A. Davis Co., 1970.