Snelbecker, G. E. (1974). Learning theory, instructional theory, and psychoeducational design. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Snelbecker, Glenn E. Learning Theory, Instructional Theory, and Psychoeducational Design. New York: McGraw-Hill, 1974.
Lua MLA (8ú heag.)Snelbecker, Glenn E. Learning Theory, Instructional Theory, and Psychoeducational Design. McGraw-Hill, 1974.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.