APA (7th ed.) Citation

O'Connell Sue. Focus on advanced English C.A.E. Longman.

Chicago Style (17th ed.) Citation

O'Connell Sue. Focus on Advanced English C.A.E. Longman.

MLA (8th ed.) Citation

O'Connell Sue. Focus on Advanced English C.A.E. Longman.

Warning: These citations may not always be 100% accurate.