Cita APA (7a ed.)

Ryan, T. A. (1947). Work and effort: The psychology of production. The Ronald Press Company.

Cita Chicago Style (17a ed.)

Ryan, Thomas Arthur. Work and Effort: The Psychology of Production. New York: The Ronald Press Company, 1947.

Cita MLA (9a ed.)

Ryan, Thomas Arthur. Work and Effort: The Psychology of Production. The Ronald Press Company, 1947.