APA

Hutchison S., . (2008). Premium. B1 level. Harlow: Longman.

Chicago

Hutchison S, . 2008. Premium. B1 level. Harlow: Longman.

Harvard

Hutchison S., . (2008). Premium. B1 level. Harlow: Longman.

MLA

Hutchison S, . Premium. B1 level. Harlow: Longman. 2008.