Cita APA

Fuchs, M., Westheimer, M., & Bonner, M. (1994). Focus on grammar: An intermediate course for reference and practice. Massachusetts: Longman.

Citación estilo Chicago

Fuchs, Marjorie, Miriam Westheimer, and Margaret Bonner. Focus On Grammar: An Intermediate Course for Reference and Practice. Massachusetts: Longman, 1994.

Cita MLA

Fuchs, Marjorie, Miriam Westheimer, and Margaret Bonner. Focus On Grammar: An Intermediate Course for Reference and Practice. Massachusetts: Longman, 1994.