Gaya APA

RICHARDS, J., LONG, M. (1985). 1 NEW EDITION : BREAKTHROUGH : A COURSE IN ENGLISH COMMUNICATION PRACTICE (ED. 2). NEW YORK: .

Gaya MLA

RICHARDS, J.C.., LONG, M.N.. "1 NEW EDITION : BREAKTHROUGH : A COURSE IN ENGLISH COMMUNICATION PRACTICE". ED. 2 NEW YORK: , 1985. Prodi S1 Sastra Inggris.