APA (7th ed.) Citation

Okun, B. (1958). Trends in birth rates in the United States since 1870. Johns Hopkins Press.

Chicago Style (17th ed.) Citation

Okun, Bernard. Trends in Birth Rates in the United States Since 1870. Baltimore: Johns Hopkins Press, 1958.

MLA (9th ed.) Citation

Okun, Bernard. Trends in Birth Rates in the United States Since 1870. Johns Hopkins Press, 1958.