Cita APA

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

Citación estilo Chicago

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.

Precaución: Estas citas no son 100% exactas.