Gaya APA

KON, T. (1991). PRACTICAL ENGLISH USAGE : ENGLISH AS A SECOND LANGUAGE 2 (CET. 1). JAKARTA: BINA RUPA AKSARA PUBLISHER.

Gaya MLA

KON, T.S.. "PRACTICAL ENGLISH USAGE : ENGLISH AS A SECOND LANGUAGE 2". CET. 1 JAKARTA: BINA RUPA AKSARA PUBLISHER, 1991. Prodi S1 Sastra Inggris.