APA aipamena

Carlton, D. W., & Chevalier, J. A. (2000). Free riding and sales strategies for the internet. National Bureau of Economic Research.

Chicago Style aipamena

Carlton, Dennis W., and Judith A. Chevalier. Free Riding and Sales Strategies for the Internet. Cambridge: National Bureau of Economic Research, 2000.

MLA aipamena

Carlton, Dennis W., and Judith A. Chevalier. Free Riding and Sales Strategies for the Internet. National Bureau of Economic Research, 2000.