Gaya APA

RICHARDS, J, C. (1996). INTERCHANGE : ENGLISH FOR INTERNATIONAL COMMUNICATION, 1 STUDENT'S BOOK . NEW YORK: CAMBRIDGE UNIVERSITY PRESS.

Gaya MLA

RICHARDS, JACK, C.. "INTERCHANGE : ENGLISH FOR INTERNATIONAL COMMUNICATION, 1 STUDENT'S BOOK". NEW YORK: CAMBRIDGE UNIVERSITY PRESS, 1996. Prodi S1 Sastra Inggris.