Welch, S., & Comer, J. (1975). Public opinion: Its formation, measurement, and impact. Mayfield.
Citazione stile Chigago Style (17a edizione)Welch, Susan, e John Comer. Public Opinion: Its Formation, Measurement, and Impact. Palo Alto, Calif: Mayfield, 1975.
Citatione MLA (9a ed.)Welch, Susan, e John Comer. Public Opinion: Its Formation, Measurement, and Impact. Mayfield, 1975.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.