Παραπομπή σε μορφή APA (7η εκδ.)

Penna, R. M. (2011). The nonprofit outcomes toolbox: A complete guide to program effectiveness, performance measurement, and results. John Wiley & Sons. https://doi.org/10.1002/9781118386835

Παραπομπή σε μορφή Chicago (17η εκδ.)

Penna, Robert Mark. The Nonprofit Outcomes Toolbox: A Complete Guide to Program Effectiveness, Performance Measurement, and Results. Hoboken, N.J.: John Wiley & Sons, 2011. https://doi.org/10.1002/9781118386835.

Παραπομπή σε μορφή MLA (8th εκδ.)

Penna, Robert Mark. The Nonprofit Outcomes Toolbox: A Complete Guide to Program Effectiveness, Performance Measurement, and Results. John Wiley & Sons, 2011. https://doi.org/10.1002/9781118386835.