Senge, P. M. (2006). The fifth discipline. Random house, London.
Lua i Stíl Chicago (17ú heag.)Senge, Peter M. The Fifth Discipline. Random house, London, 2006.
Lua MLA (9ú heag.)Senge, Peter M. The Fifth Discipline. Random house, London, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.