This article refers to:
Choi, S., Baek, J., & Kang, H. (2013) Customer contact employees' commitment to extra-role customer service: the effect of internal service quality perception. Journal of Global Scholars of Marketing Science, http://dx.doi.org/10.1080/21639159.2012.760922
When the above article was first published, the second author was known as Jihyun Baek, but has since changed her name to Jihyun Paik and wishes to record this to clear up any confusion when citing her work.