APA

Cypres L., . (1999). Lets Speak Businees English. EUA: Cambridge University.

Chicago

Cypres Linda, . 1999. Lets Speak Businees English. EUA: Cambridge University.

Harvard

Cypres L., . (1999). Lets Speak Businees English. EUA: Cambridge University.

MLA

Cypres Linda, . Lets Speak Businees English. EUA: Cambridge University. 1999.