APA

Barker C., Mitchell L., . (2014). Cambridge Global English for Cambridge Secondary 1 English as a Second Language. Coursebook. 7. Cambridge: Cambridge University Press.

Chicago

Barker Chris, Mitchell L, . 2014. Cambridge Global English for Cambridge Secondary 1 English as a Second Language. Coursebook. 7. Cambridge: Cambridge University Press.

Harvard

Barker C., Mitchell L., . (2014). Cambridge Global English for Cambridge Secondary 1 English as a Second Language. Coursebook. 7. Cambridge: Cambridge University Press.

MLA

Barker Chris, Mitchell L, . Cambridge Global English for Cambridge Secondary 1 English as a Second Language. Coursebook. 7. Cambridge: Cambridge University Press. 2014.