Cita APA (7a ed.)

Hays, R. D. (1996). Internal service excellence: A manager's guide to building world class internal service unit performance. Summit executive press.

Cita Chicago Style (17a ed.)

Hays, Richard D. Internal Service Excellence: A Manager's Guide to Building World Class Internal Service Unit Performance. Sarasota: Summit executive press, 1996.

Cita MLA (9a ed.)

Hays, Richard D. Internal Service Excellence: A Manager's Guide to Building World Class Internal Service Unit Performance. Summit executive press, 1996.