APA-Zitierstil (7. Ausg.)

Abbs, B., & Freebairn, I. B. (2001). In focus 3: Student's book + workbook.

Chicago-Zitierstil (17. Ausg.)

Abbs, Brian, und Ingrid Barker Freebairn. In Focus 3: Student's Book + Workbook. [Harlow?], 2001.

MLA-Zitierstil (9. Ausg.)

Abbs, Brian, und Ingrid Barker Freebairn. In Focus 3: Student's Book + Workbook. 2001.