APA استشهاد

P Purushothaman Nair. Pakshikkathakal. DC Books.

استشهاد بنمط شيكاغو

P Purushothaman Nair. Pakshikkathakal. Kottayam: DC Books.

MLA استشهاد

P Purushothaman Nair. Pakshikkathakal. DC Books.