Gaya APA

al., M, S, E. (1986). THE CAMBRIDGE ENGLISH COURSE 1 STUDENT'S BOOK (Ed. 1, Cet. 8). United State Of America: Cambridge University Press.

Gaya MLA

al., Michael, SWAN,, Et.. "THE CAMBRIDGE ENGLISH COURSE 1 STUDENT'S BOOK". Ed. 1, Cet. 8 United State Of America: Cambridge University Press, 1986. Book.