Cita APA (7a ed.)

Alexander,L.G. (1974). Question and answer: Graded oral comprehension exercises. Longman.

Cita Chicago Style (17a ed.)

Alexander,L.G. Question and Answer: Graded Oral Comprehension Exercises. Longman, 1974.

Cita MLA (8a ed.)

Alexander,L.G. Question and Answer: Graded Oral Comprehension Exercises. Longman, 1974.

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