Style de citation APA

(1997). Business English ertificate 2, chứng chỉ BEC.

Style de citation Chicago

Business English Ertificate 2, Chứng Chỉ BEC. 1997.

Style de citation MLA

Business English Ertificate 2, Chứng Chỉ BEC. 1997.

Attention : ces citations peuvent ne pas être correctes à 100%.