(1963). Programed learning: A critical evaluation.
Lua i Stíl Chicago (17ú heag.)Programed Learning: A Critical Evaluation. 1963.
Lua MLA (9ú heag.)Programed Learning: A Critical Evaluation. 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.