Kenett, R., & Salini, S. (2012). Modern analysis of customer surveys: With applications using R. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Kenett, Ron, agus Silvia Salini. Modern Analysis of Customer Surveys: With Applications Using R. Chichester: John Wiley & Sons, 2012.
Lua MLA (8ú heag.)Kenett, Ron, agus Silvia Salini. Modern Analysis of Customer Surveys: With Applications Using R. John Wiley & Sons, 2012.
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