Cita APA

David Riley. (1999). Business listening and speaking (Pre-intermediate). Essex, UK: Longman.

Chicago Style Citation

David Riley. Business Listening and Speaking (Pre-intermediate). Essex, UK: Longman, 1999.

Cita MLA

David Riley. Business Listening and Speaking (Pre-intermediate). Essex, UK: Longman, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.