Παραπομπή APA

Nilakanthasarmma, P. N. (1962). Prasnamarggam. Geetha Private ltd.

Παραπομπή Chicago Style

Nilakanthasarmma, Punnasseri Nampi. Prasnamarggam. Trichur: Geetha Private ltd, 1962.

Παραπομπή MLA

Nilakanthasarmma, Punnasseri Nampi. Prasnamarggam. Geetha Private ltd, 1962.