Ward, D. B. (2009). A new brand of business: Charles Coolidge Parlin, Curtis Publishing Company, and the origins of market research. Temple University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Ward, Douglas B. A New Brand of Business: Charles Coolidge Parlin, Curtis Publishing Company, and the Origins of Market Research. Philadelphia: Temple University Press, 2009.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Ward, Douglas B. A New Brand of Business: Charles Coolidge Parlin, Curtis Publishing Company, and the Origins of Market Research. Temple University Press, 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.