Allen, E. D., & Valette, R. M. (1977). Classroom techniques: Foreign languages and English as a second language. Harcourt Brace Jovanovich.
Lua i Stíl Chicago (17ú heag.)Allen, Edward David, agus Rebecca M. Valette. Classroom Techniques: Foreign Languages and English as a Second Language. New York: Harcourt Brace Jovanovich, 1977.
Lua MLA (9ú heag.)Allen, Edward David, agus Rebecca M. Valette. Classroom Techniques: Foreign Languages and English as a Second Language. Harcourt Brace Jovanovich, 1977.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.