APA (7th ed.) Citation

Borgstrom, G. (1969). Too many: A study of Earth's biological limitations. Macmillan.

Chicago Style (17th ed.) Citation

Borgstrom, Georg. Too Many: A Study of Earth's Biological Limitations. [New York]: Macmillan, 1969.

MLA (9th ed.) Citation

Borgstrom, Georg. Too Many: A Study of Earth's Biological Limitations. Macmillan, 1969.