LANDAUER, T. Physichology. McGraw-Hill Book Co.
Lua i Stíl Chicago (17ú heag.)LANDAUER, T.K. Physichology. McGraw-Hill Book Co.
Lua MLA (8ú heag.)LANDAUER, T.K. Physichology. McGraw-Hill Book Co.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.