Cita APA (7th ed.)
Battersby, A., Villarreal, O., Lethaby, & Rodri<U+00CC><U+0081>guez, M. S. (1999). POLIMODAL english students̐ book 2. Macmillan Heinemann.
Cita Chicago (17th ed.)
Battersby, Alan, Omar Villarreal, Lethaby, i Mari<U+00CC><U+0081>a S. Rodri<U+00CC><U+0081>guez. POLIMODAL English Students̐ Book 2. Madrid: Macmillan Heinemann, 1999.
Cita MLA (9th ed.)
Battersby, Alan, et al. POLIMODAL English Students̐ Book 2. Macmillan Heinemann, 1999.
Atenció: Aquestes cites poden no estar 100% correctes.