Cita APA (7a ed.)

Langley, G. J. (2009). The improvement guide: A practical approach to enhancing organizational performance (2nd editon.). Jossey-Bass.

Cita Chicago Style (17a ed.)

Langley, Gerald J. The Improvement Guide: A Practical Approach to Enhancing Organizational Performance. 2nd editon. San Francisco: Jossey-Bass, 2009.

Cita MLA (9a ed.)

Langley, Gerald J. The Improvement Guide: A Practical Approach to Enhancing Organizational Performance. 2nd editon. Jossey-Bass, 2009.