Cita APA

English Language Services, & English Language Services. (1969). Intensive course in English. Washington: Washington Educational Research Associates.

Citación estilo Chicago

English Language Services, y English Language Services. Intensive Course in English. Washington: Washington Educational Research Associates, 1969.

Cita MLA

English Language Services, y English Language Services. Intensive Course in English. Washington: Washington Educational Research Associates, 1969.

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