Cita APA (7a ed.)
Green, D. P., Gerber, A. S., & De Boef, S. (Summer 1999). Tracking opinion over time: A method for reducing sampling error. Public Opinion Quarterly, 63(2), 178-193.
Cita Chicago Style (17a ed.)
Green, Donald P., Alan S. Gerber, y Suzanna De Boef. "Tracking Opinion over Time: A Method for Reducing Sampling Error." Public Opinion Quarterly 63, no. 2 (Summer 1999): 178-193.
Cita MLA (9a ed.)
Green, Donald P., et al. "Tracking Opinion over Time: A Method for Reducing Sampling Error." Public Opinion Quarterly, vol. 63, no. 2, Summer 1999, pp. 178-193.
Precaución: Estas citas no son 100% exactas.