Cunningham S. Sarah & Moor P. Peter. (1999). Cutting Edge. Upper Intermediate: Class cassette 2. Harlow, Longman, 1999.
Cita Chicago (17th ed.)Cunningham S. Sarah i Moor P. Peter. Cutting Edge. Upper Intermediate: Class Cassette 2. Harlow, Longman, 1999, 1999.
Cita MLA (9th ed.)Cunningham S. Sarah i Moor P. Peter. Cutting Edge. Upper Intermediate: Class Cassette 2. Harlow, Longman, 1999, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.