Gaya APA

GRADDOL, D. (1997). The future of english? : a guide to forcesting the popularity of the english language in the 21st century/ David Graddol . British: British Council.

Gaya MLA

GRADDOL, David. "The future of english? : a guide to forcesting the popularity of the english language in the 21st century/ David Graddol". British: British Council, 1997. Text.