Cita APA (7th ed.)

Wood, I., & Pile, l. (2001). Pass Cambridge BEC Higher. Summertown Publishing.

Cita Chicago (17th ed.)

Wood, Ian, i louse Pile. Pass Cambridge BEC Higher. Oxford: Summertown Publishing, 2001.

Cita MLA (8th ed.)

Wood, Ian, i louse Pile. Pass Cambridge BEC Higher. Summertown Publishing, 2001.