Dyfyniad APA

Cronin, T. E. e., & Greenberg, S. D. 1. j. e. (1969). The Presidential advisory system. Harper and Row.

Dyfyniad Arddull Chicago

Cronin, Thonmas E. ed, and Sanford D. 1940- joint ed Greenberg. The Presidential Advisory System. New York: Harper and Row, 1969.

Dyfyniad MLA

Cronin, Thonmas E. ed, and Sanford D. 1940- joint ed Greenberg. The Presidential Advisory System. Harper and Row, 1969.

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