Knox, A. B. (1986). Helping adults learn. Jossey-Bass.
Lua i Stíl Chicago (17ú heag.)Knox, Alan B. Helping Adults Learn. San Francisco: Jossey-Bass, 1986.
Lua MLA (9ú heag.)Knox, Alan B. Helping Adults Learn. Jossey-Bass, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.