APA Style

Schmitt, B., Zutphen, G, V. (2012). Happy customers everywhere: How your business can profit from the insight of positive psychology . New York: Palgrave Macmillan.

MLA Style

Schmitt, Bernd., Zutphen, Glenn, Van. "Happy customers everywhere: How your business can profit from the insight of positive psychology". New York: Palgrave Macmillan, 2012. Text.