Petit, A. (1994). Secrets to enliven learning: How to develop extraordinary self-directed training materials. Pfeiffer.
Lua i Stíl Chicago (17ú heag.)Petit, Ann. Secrets to Enliven Learning: How to Develop Extraordinary Self-directed Training Materials. Amsterdam: Pfeiffer, 1994.
Lua MLA (9ú heag.)Petit, Ann. Secrets to Enliven Learning: How to Develop Extraordinary Self-directed Training Materials. Pfeiffer, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.