Cita APA

Nick Ham. (1999). Longman essential activator (Workbook). Essex, UK: Longman.

Chicago Style Citation

Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.

Cita MLA

Nick Ham. Longman Essential Activator (Workbook). Essex, UK: Longman, 1999.

Atenció: Aquestes cites poden no estar 100% correctes.