Παραπομπή APA

Garber, P. (2007). 25 reproducible activities for customer service excellence. H.R.D.

Παραπομπή Chicago Style

Garber, Peter.R. 25 Reproducible Activities for Customer Service Excellence. Amherst: H.R.D, 2007.

Παραπομπή MLA

Garber, Peter.R. 25 Reproducible Activities for Customer Service Excellence. H.R.D, 2007.