Programmed learning: Journal of the Association for Programmed Learning.
Lua i Stíl Chicago (17ú heag.)Programmed Learning: Journal of the Association for Programmed Learning.
Lua MLA (9ú heag.)Programmed Learning: Journal of the Association for Programmed Learning.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.