APA (7th ed.) Citation

Frankel, L. B. (1970). This crowded world; an introduction to the study of population. Columbia Books.

Chicago Style (17th ed.) Citation

Frankel, Lillian Berson. This Crowded World; an Introduction to the Study of Population. Washington: Columbia Books, 1970.

MLA (9th ed.) Citation

Frankel, Lillian Berson. This Crowded World; an Introduction to the Study of Population. Columbia Books, 1970.