Research, N. M. (2014). Ad spending for January 2013 vs 2012. Nielsen Media Research.
استشهاد بنمط شيكاغوResearch, Nielsen Media. Ad Spending for January 2013 Vs 2012. Nielsen Media Research, 2014.
MLA استشهادResearch, Nielsen Media. Ad Spending for January 2013 Vs 2012. Nielsen Media Research, 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.