APA استشهاد

Narayanan P V & Sreedevi K P. (2018). Professor S Venkatakrishnan smritirekhakal, krithikal,patanam. Pusthakabhavan.

استشهاد بنمط شيكاغو

Narayanan P V و Sreedevi K P. Professor S Venkatakrishnan Smritirekhakal, Krithikal,patanam. Kannur: Pusthakabhavan, 2018.

MLA استشهاد

Narayanan P V و Sreedevi K P. Professor S Venkatakrishnan Smritirekhakal, Krithikal,patanam. Pusthakabhavan, 2018.