MLA

Grigoroudis, Evangelos, and Yannis Siskos. Customer Satisfaction Evaluation. Springer US, 2010.

APA

Grigoroudis, E., & Siskos, Y. (2010). Customer Satisfaction Evaluation. Springer US.

Chicago

Grigoroudis, Evangelos, and Yannis Siskos. Customer Satisfaction Evaluation. : Springer US, 2010.