Παραπομπή APA

Velayudhan T D. (2012). Keralathile mathsyangal. D C Books.

Παραπομπή Chicago Style

Velayudhan T D. Keralathile Mathsyangal. Kottayam: D C Books, 2012.

Παραπομπή MLA

Velayudhan T D. Keralathile Mathsyangal. D C Books, 2012.