Gagné, R. M., & Driscoll, M. P. (1988). Essentials of learning for instruction (Second edition.). Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Gagné, Robert M., agus Marcy Perkins Driscoll. Essentials of Learning for Instruction. Second edition. Englewood Cliffs, N.J.: Prentice Hall, 1988.
Lua MLA (8ú heag.)Gagné, Robert M., agus Marcy Perkins Driscoll. Essentials of Learning for Instruction. Second edition. Prentice Hall, 1988.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.