Steve Dublanica

Keep the Change: A Clueless Tipper's Quest to Become the Guru of the Gratuity (2010)

More a look at the perils of working in the service industry. The whole information can be summarized at the end that if you don't know how much to someone, ask them, they'll tell you accurate information. Sense my skepticism there. It is useful to realize which groups you may have been overlooki...