APA Citation

(2011). Green book worldwide directory of focus group companies and services 2011/2012. New York: AMA Communciations Services.

Chicago Style Citation

Green Book Worldwide Directory of Focus Group Companies and Services 2011/2012. New York: AMA Communciations Services, 2011.

MLA Citation

Green Book Worldwide Directory of Focus Group Companies and Services 2011/2012. New York: AMA Communciations Services, 2011.

Warning: These citations may not always be 100% accurate.