Gaya APA

AZAR, B, S. (1989). UNDERSTANDING AND USING ENGLISH GRAMMAR (2). LONDON: PRENTICE HALL.

Gaya MLA

AZAR, BETTY, SCHRAMPFER. "UNDERSTANDING AND USING ENGLISH GRAMMAR". 2 LONDON: PRENTICE HALL, 1989. Prodi S1 Sastra Inggris.