Frankenstein, C. (1979). They think again: Restoring cognitive abilities through teaching. Van Nostrand Reinhold.
Lua i Stíl Chicago (17ú heag.)Frankenstein, Carl. They Think Again: Restoring Cognitive Abilities Through Teaching. New York: Van Nostrand Reinhold, 1979.
Lua MLA (8ú heag.)Frankenstein, Carl. They Think Again: Restoring Cognitive Abilities Through Teaching. Van Nostrand Reinhold, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.