Dyfyniad APA

Nivola, P. S., & Brady, D. W. (2006). Red and blue nation? Brookings Institution Press.

Dyfyniad Arddull Chicago

Nivola, Pietro S., và David W. Brady. Red and Blue Nation? Brookings Institution Press, 2006.

Dyfyniad MLA

Nivola, Pietro S., và David W. Brady. Red and Blue Nation? Brookings Institution Press, 2006.

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