Cita APA (7a ed.)

Kenny, N. (1996). First certificate Passkey: Student's book. Heinemann English Language Teaching.

Cita Chicago Style (17a ed.)

Kenny, Nick. First Certificate Passkey: Student's Book. Oxford: Heinemann English Language Teaching, 1996.

Cita MLA (9a ed.)

Kenny, Nick. First Certificate Passkey: Student's Book. Heinemann English Language Teaching, 1996.