Cita APA

Maurer, J. (1995). Focus on grammar: An advanced course for reference and practice. [S.l.]: Longman.

Citación estilo Chicago

Maurer, Jay. Focus On Grammar: An Advanced Course for Reference and Practice. [S.l.]: Longman, 1995.

Cita MLA

Maurer, Jay. Focus On Grammar: An Advanced Course for Reference and Practice. [S.l.]: Longman, 1995.

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