Gaya APA

Leech, G., Svartvik, J. (1973). A Communicative Grammar Of English (-). Singapura: English Language Book Society And Longman Group Limited.

Gaya MLA

Leech, Geofrey., Svartvik, Jan. "A Communicative Grammar Of English". - Singapura: English Language Book Society And Longman Group Limited, 1973. Text.