Cita APA

Cook, R. C., & Lecht, J. (1968). People!: An introduction to the study of population. Columbia Books.

Citación estilo Chicago

Cook, Robert C., and Jane Lecht. People!: An Introduction to the Study of Population. Washington: Columbia Books, 1968.

Cita MLA

Cook, Robert C., and Jane Lecht. People!: An Introduction to the Study of Population. Columbia Books, 1968.

Warning: These citations may not always be 100% accurate.