Cita APA (7th ed.)

Keyfitz, N. (1968). Introduction to the mathematics of population. Addison-Wesley Pub. Co.

Cita Chicago (17th ed.)

Keyfitz, Nathan. Introduction to the Mathematics of Population. Reading, Mass.: Addison-Wesley Pub. Co, 1968.

Cita MLA (9th ed.)

Keyfitz, Nathan. Introduction to the Mathematics of Population. Addison-Wesley Pub. Co, 1968.