Dyfyniad APA

Welch, S., & Comer, J. (1975). Public opinion: Its formation, measurement, and impact. Mayfield.

Dyfyniad Arddull Chicago

Welch, Susan, and John Comer. Public Opinion: Its Formation, Measurement, and Impact. Palo Alto, Calif: Mayfield, 1975.

Dyfyniad MLA

Welch, Susan, and John Comer. Public Opinion: Its Formation, Measurement, and Impact. Mayfield, 1975.

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