APA

Hadfied J., Hadfield C., . (1999). Oxford basics. : Cambridge University press.

Chicago

Hadfied Jill, Hadfield Charles, . 1999. Oxford basics. : Cambridge University press.

Harvard

Hadfied J., Hadfield C., . (1999). Oxford basics. : Cambridge University press.

MLA

Hadfied Jill, Hadfield Charles, . Oxford basics. : Cambridge University press. 1999.