por Martin, William B [autor] | Tejera, Héctor G [traductor] | Martin, William B. Managing quality customers service.
por Gerson, Richard F [autor] | Tejera, Héctor G [traductor] | Grepe Philp, Nicolas [editor] | Gerson, Richard F. Beyond customer service.
por Scott, Dru [autor] | Tejera, Héctor G [traductor] | Scott, Dru. Customer satisfaction.