Cita APA

Close, R. A., & Close, R. A. (1992). A teachers' grammar: An approach to the central problems of English. England: Language Teaching.

Citación estilo Chicago

Close, R. A., y R. A. Close. A Teachers' Grammar: An Approach to the Central Problems of English. England: Language Teaching, 1992.

Cita MLA

Close, R. A., y R. A. Close. A Teachers' Grammar: An Approach to the Central Problems of English. England: Language Teaching, 1992.