Flow : the psychology of optimal experience.

MLA

Csikszentmihalyi, Mihaly. Flow : the Psychology of Optimal Experience. New York: Harper Perennial, 2008.

APA

Csikszentmihalyi, M. (2008). Flow : the psychology of optimal experience. New York: Harper Perennial.

Chicago

Csikszentmihalyi, Mihaly, Flow: The Psychology of Optimal Experience. New York: Harper Perennial, 2008.