Dyfyniad APA

Richardson, J. F. (1974). Urban police in the United States. Kennikat Press.

Dyfyniad Arddull Chicago

Richardson, James F. Urban Police in the United States. Port Washington, N.Y.: Kennikat Press, 1974.

Dyfyniad MLA

Richardson, James F. Urban Police in the United States. Kennikat Press, 1974.

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