Dyfyniad APA
Patterson, T. E. (1997). The American democracy (3rd ed., election ed.). McGraw-Hill.
Dyfyniad Arddull Chicago
Patterson, Thomas E. The American Democracy. 3rd ed., election ed. New York: McGraw-Hill, 1997.
Dyfyniad MLA
Patterson, Thomas E. The American Democracy. 3rd ed., election ed. McGraw-Hill, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.