Dyfyniad APA

Duffy, J. (1968). A history of public health in New York City, 1625-1866. Russell Sage Foundation.

Dyfyniad Arddull Chicago

Duffy, John. A History of Public Health in New York City, 1625-1866. New York: Russell Sage Foundation, 1968.

Dyfyniad MLA

Duffy, John. A History of Public Health in New York City, 1625-1866. Russell Sage Foundation, 1968.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.