Young, S. H. Ultralearning.
Lua i Stíl Chicago (17ú heag.)Young, Scott H. Ultralearning.
Lua MLA (9ú heag.)Young, Scott H. Ultralearning.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)