Rothwell William J. (2018). Human Performance Improvement (3.). Routledge.
Lua i Stíl Chicago (17ú heag.)Rothwell William J. Human Performance Improvement. 3. London: Routledge, 2018.
Lua MLA (9ú heag.)Rothwell William J. Human Performance Improvement. 3. Routledge, 2018.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.