Dyfyniad APA

(1968). Modern political systems: Europe (2nd ed.). Prentice hall.

Dyfyniad Arddull Chicago

Modern Political Systems: Europe. 2nd ed. New Jersey: Prentice hall, 1968.

Dyfyniad MLA

Modern Political Systems: Europe. 2nd ed. Prentice hall, 1968.

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