Cita APA (7th ed.)

Bonner M. Margaret. (1995). Focus on Grammar. Teacher`s manual. White Plains, Longman, 1995.

Cita Chicago (17th ed.)

Bonner M. Margaret. Focus on Grammar. Teacher`s Manual. White Plains, Longman, 1995, 1995.

Cita MLA (9th ed.)

Bonner M. Margaret. Focus on Grammar. Teacher`s Manual. White Plains, Longman, 1995, 1995.

Atenció: Aquestes cites poden no estar 100% correctes.