Cita APA (7th ed.)

Sasikumar, V. (2007). A course in listening & speaking I. Cambridge University Press.

Cita Chicago (17th ed.)

Sasikumar, V. A Course in Listening & Speaking I. New Delhi: Cambridge University Press, 2007.

Cita MLA (8th ed.)

Sasikumar, V. A Course in Listening & Speaking I. Cambridge University Press, 2007.