Gaya APA

RICHARD, J, C. et al (1991). INTERCHANGE FOUTH EDITION: STUDENTS BOOK 2 . JAKARTA BARAT: CAMBRIDGE UNIVERSITY PRESS.

Gaya MLA

RICHARD, JACK, C. et al. "INTERCHANGE FOUTH EDITION: STUDENTS BOOK 2". JAKARTA BARAT: CAMBRIDGE UNIVERSITY PRESS, 1991. Text.