Cita APA (7th ed.)

Smith D. G. David Gordon. (2013). English for Telephoning. Oxford, Oxford University Press, 2013.

Cita Chicago (17th ed.)

Smith D. G. David Gordon. English for Telephoning. Oxford, Oxford University Press, 2013, 2013.

Cita MLA (9th ed.)

Smith D. G. David Gordon. English for Telephoning. Oxford, Oxford University Press, 2013, 2013.