Παραπομπή APA

Sasikumar, V. E. (2005). Course in listening and speaking I. Foundation books.

Παραπομπή Chicago Style

Sasikumar, V. Etc. Course in Listening and Speaking I. New Delhi: Foundation books, 2005.

Παραπομπή MLA

Sasikumar, V. Etc. Course in Listening and Speaking I. Foundation books, 2005.