Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

Warning: These citations may not always be 100% accurate.