Cita APA (7th ed.)

Schnell, G. A. (1983). The Study of population: Elements, pattern processes. Merrill.

Cita Chicago (17th ed.)

Schnell, George A. The Study of Population: Elements, Pattern Processes. London, Charles E.: Merrill, 1983.

Cita MLA (9th ed.)

Schnell, George A. The Study of Population: Elements, Pattern Processes. Merrill, 1983.