APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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