Cita APA (7a ed.)

(1998). Cambridge. Examinations, Certificates& Diplomas: KET. Key English Test. Cambridge, University of Cambridge, 1998.

Cita Chicago Style (17a ed.)

Cambridge. Examinations, Certificates& Diplomas: KET. Key English Test. Cambridge, University of Cambridge, 1998, 1998.

Cita MLA (9a ed.)

Cambridge. Examinations, Certificates& Diplomas: KET. Key English Test. Cambridge, University of Cambridge, 1998, 1998.