Holbert, N. B., & Speece, M. W. (1993). Practical Marketing Research: An Integrated Global Perspective. New York: Prentice-Hall.
استشهاد بنمط شيكاغوHolbert, Neil Bruce, و Mark W. Speece. Practical Marketing Research: An Integrated Global Perspective. New York: Prentice-Hall, 1993.
MLA استشهادHolbert, Neil Bruce, و Mark W. Speece. Practical Marketing Research: An Integrated Global Perspective. New York: Prentice-Hall, 1993.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.