Shaw, R., & Merrick, D. (2005). Marketing payback: Is your marketing profitable. Financial TRimes Prentice Hall.
Cita Chicago (17th ed.)Shaw, Robert, i David Merrick. Marketing Payback: Is Your Marketing Profitable. New York: Financial TRimes Prentice Hall, 2005.
Cita MLA (9th ed.)Shaw, Robert, i David Merrick. Marketing Payback: Is Your Marketing Profitable. Financial TRimes Prentice Hall, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.