Bell J. Jan & Gower R. Roger. (2001). Matters. Elementary: Students' Book (8-th impression.). Harlow, Longman, 2001.
Cita Chicago Style (17a ed.)Bell J. Jan y Gower R. Roger. Matters. Elementary: Students' Book. 8-th impression. Harlow, Longman, 2001, 2001.
Cita MLA (9a ed.)Bell J. Jan y Gower R. Roger. Matters. Elementary: Students' Book. 8-th impression. Harlow, Longman, 2001, 2001.
Precaución: Estas citas no son 100% exactas.