APA

Sinclair J., University of Birmingham, . (1992). Collins COBUILD English usage. LONDON: HarperCollins.

Chicago

Sinclair John, University of Birmingham, . 1992. Collins COBUILD English usage. LONDON: HarperCollins.

Harvard

Sinclair J., University of Birmingham, . (1992). Collins COBUILD English usage. LONDON: HarperCollins.

MLA

Sinclair John, University of Birmingham, . Collins COBUILD English usage. LONDON: HarperCollins. 1992.