Lua APA (7ú heag.)
Wittrock, M. C. (1977). Learning and instruction. McCutchan Pub. Corp..
Lua i Stíl Chicago (17ú heag.)
Wittrock, M. C. Learning and Instruction. Berkeley, Calif.: McCutchan Pub. Corp., 1977.
Lua MLA (9ú heag.)
Wittrock, M. C. Learning and Instruction. McCutchan Pub. Corp., 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.