Rutherford, D., & Knowles, J. (2008). Vulcans, earthlings and marketing ROI: Getting finance, marketing and advertising onto the same planet. Wilfrid Laurier University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rutherford, David, و Jonathan Knowles. Vulcans, Earthlings and Marketing ROI: Getting Finance, Marketing and Advertising onto the Same Planet. Waterloo, Ont.: Wilfrid Laurier University Press, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Rutherford, David, و Jonathan Knowles. Vulcans, Earthlings and Marketing ROI: Getting Finance, Marketing and Advertising onto the Same Planet. Wilfrid Laurier University Press, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.