Allen, E. D. (1977). Classroom techniques: Foreign languages and English as a second language. New York: Harcourt Brace Jovanovich.
Citação norma ChicagoAllen, Edward David. Classroom Techniques: Foreign Languages and English As a Second Language. New York: Harcourt Brace Jovanovich, 1977.
Citação norma MLAAllen, Edward David. Classroom Techniques: Foreign Languages and English As a Second Language. New York: Harcourt Brace Jovanovich, 1977.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.