APA استشهاد

Bonner, M. A., & Fuchs, M. A. (2000). Focus on grammar: A high-intermediate course for reference and practice (Ed.2.).

استشهاد بنمط شيكاغو

Bonner, Margaret; Author, و Marjorie; Author Fuchs. Focus on Grammar: A High-intermediate Course for Reference and Practice. Ed.2. New York, Addison-Wesley Longman, 2000.

MLA استشهاد

Bonner, Margaret; Author, و Marjorie; Author Fuchs. Focus on Grammar: A High-intermediate Course for Reference and Practice. Ed.2. 2000.