Cita APA (7a ed.)

Graunt, J., & Willcox, W. F. (1939). Natural and political observations made upon the bills of mortality. Johns Hopkins Press.

Cita Chicago Style (17a ed.)

Graunt, John, y Walter F. Willcox. Natural and Political Observations Made upon the Bills of Mortality. Baltimore: Johns Hopkins Press, 1939.

Cita MLA (9a ed.)

Graunt, John, y Walter F. Willcox. Natural and Political Observations Made upon the Bills of Mortality. Johns Hopkins Press, 1939.