Cita APA (7a ed.)

Williams, J., Chaloupka, F. J., & Wechsler, H. (2002). Are there differential effects of price and policy on college students' drinking intensity? National Bureau of Economic Research.

Cita Chicago Style (17a ed.)

Williams, Jenny, Frank J. Chaloupka, y Henry Wechsler. Are There Differential Effects of Price and Policy on College Students' Drinking Intensity? Cambridge, MA: National Bureau of Economic Research, 2002.

Cita MLA (9a ed.)

Williams, Jenny, et al. Are There Differential Effects of Price and Policy on College Students' Drinking Intensity? National Bureau of Economic Research, 2002.