APA-referens (7:e uppl.)
Gallagher, R. S. (2008). What to say to a porcupine: 20 humorous tales that get to the heart of great customer service. American Management Association.
Chicago-referens (17:e uppl.)
Gallagher, Richard S. What to Say to a Porcupine: 20 Humorous Tales That Get to the Heart of Great Customer Service. New York: American Management Association, 2008.
MLA-referens (9:e uppl.)
Gallagher, Richard S. What to Say to a Porcupine: 20 Humorous Tales That Get to the Heart of Great Customer Service. American Management Association, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.