Gaya APA

GRUYTER, M, D. (2006). CURRENT TRENDS IN THE DEVELOPMENT AND TEACHING OF THE FOUR LANGUAGE SKILLS . BERLIN: DEUTSCHE.

Gaya MLA

GRUYTER, MOUTON, DE. "CURRENT TRENDS IN THE DEVELOPMENT AND TEACHING OF THE FOUR LANGUAGE SKILLS". BERLIN: DEUTSCHE, 2006. Prodi S1 Sastra Inggris.