BELYAGER, B. (1963). The psychology of teaching foreign languages. Macmillan.
Lua i Stíl Chicago (17ú heag.)BELYAGER, Boris. The Psychology of Teaching Foreign Languages. Macmillan, 1963.
Lua MLA (9ú heag.)BELYAGER, Boris. The Psychology of Teaching Foreign Languages. Macmillan, 1963.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.