Tohutoro APA (7th ed.)
Powell, G. R. (2008). Marketing calculator: Measuring and managing return on marketing investment. John Wiley & Sons (Asia).
Tohutoru Kātū Chicago (17th ed.)
Powell, Guy R. Marketing Calculator: Measuring and Managing Return on Marketing Investment. Singapore ; Hoboken, NJ: John Wiley & Sons (Asia), 2008.
Tohutoro MLA (9th ed.)
Powell, Guy R. Marketing Calculator: Measuring and Managing Return on Marketing Investment. John Wiley & Sons (Asia), 2008.
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