Senge, P. (2004). Presence. Random House Business Books.
Lua i Stíl Chicago (17ú heag.)Senge, Peter. Presence. London: Random House Business Books, 2004.
Lua MLA (9ú heag.)Senge, Peter. Presence. Random House Business Books, 2004.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.