Barr, A., Lindelow, M., Garcia-Montalvo, J., & Serneels, P. (2005). Intrinsic motivations on the development frontline: Do they exist? Do they endure? GPRG.
Lua i Stíl Chicago (17ú heag.)Barr, A., M. Lindelow, J. Garcia-Montalvo, agus P. Serneels. Intrinsic Motivations on the Development Frontline: Do They Exist? Do They Endure? GPRG, 2005.
Lua MLA (9ú heag.)Barr, A., et al. Intrinsic Motivations on the Development Frontline: Do They Exist? Do They Endure? GPRG, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.