Gaya APA

RICHARDS, J, C. et al (2013). INTERCHANGE FOURTH EDITION : WORKBOOK 2 (ED 4). MEXICO: CAMBRIDGE UNIVERSITY PRESS.

Gaya MLA

RICHARDS, JACK, C.. et al. "INTERCHANGE FOURTH EDITION : WORKBOOK 2". ED 4 MEXICO: CAMBRIDGE UNIVERSITY PRESS, 2013. Text.