APA استشهاد

Menon, P. R. (1980). Pre Degree Trigonamiti (2nd ed.). State Institute of Languages.

استشهاد بنمط شيكاغو

Menon, P Ramachandra. Pre Degree Trigonamiti. 2nd ed. Trivandrum: State Institute of Languages, 1980.

MLA استشهاد

Menon, P Ramachandra. Pre Degree Trigonamiti. 2nd ed. State Institute of Languages, 1980.