Citazione Stile APA (7a Edizione)

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

Citazione stile Chigago Style (17a edizione)

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

Citatione MLA (9a ed.)

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