Grigoroudis, E., & Siskos, Y. (2010). Customer Satisfaction Evaluation: Methods for Measuring and Implementing Service Quality. Springer Science+Business Media, LLC.
Παραπομπή σε μορφή Chicago (17η εκδ.)Grigoroudis, Evangelos, και Yannis Siskos. Customer Satisfaction Evaluation: Methods for Measuring and Implementing Service Quality. Boston, MA: Springer Science+Business Media, LLC, 2010.
Παραπομπή σε μορφή MLA (8th εκδ.)Grigoroudis, Evangelos, και Yannis Siskos. Customer Satisfaction Evaluation: Methods for Measuring and Implementing Service Quality. Springer Science+Business Media, LLC, 2010.
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