APA-referens (7:e uppl.)

(2008). The employees that laugh together..: How laughter can increase profitability. Enterprise.

Chicago-referens (17:e uppl.)

"The Employees That Laugh Together..: How Laughter Can Increase Profitability." Enterprise 2008.

MLA-referens (9:e uppl.)

"The Employees That Laugh Together..: How Laughter Can Increase Profitability." Enterprise, 2008.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.