APA

Abbs B., Freebairn I., . (2000). Blueprint. Intermediate. London: Longman.

Chicago

Abbs B, Freebairn I, . 2000. Blueprint. Intermediate. London: Longman.

Harvard

Abbs B., Freebairn I., . (2000). Blueprint. Intermediate. London: Longman.

MLA

Abbs B, Freebairn I, . Blueprint. Intermediate. London: Longman. 2000.