APA aipamena

N V P Unithiri. (1993). Pracheena bharatheeya darsanam. Chintha.

Chicago Style aipamena

N V P Unithiri. Pracheena Bharatheeya Darsanam. Thiruvanathapuram: Chintha, 1993.

MLA aipamena

N V P Unithiri. Pracheena Bharatheeya Darsanam. Chintha, 1993.