Dyfyniad APA

Research & Politics | SAGE Publishing. Cambridge University Press.

Dyfyniad Arddull Chicago

Research & Politics | SAGE Publishing. Cambridge University Press.

Dyfyniad MLA

Research & Politics | SAGE Publishing. Cambridge University Press.

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