Lua APA (7ú heag.)

Cram, D. (1961). Explaining "teaching machines" and programming. Fearon Pub.

Lua i Stíl Chicago (17ú heag.)

Cram, David. Explaining "Teaching Machines" and Programming. San Francisco: Fearon Pub, 1961.

Lua MLA (9ú heag.)

Cram, David. Explaining "Teaching Machines" and Programming. Fearon Pub, 1961.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.