Gopalakrishnan, N. (2002). Gaveshana reethisasthram. State Institute of Languages.
Chicago Edition CitationGopalakrishnan, Naduvattom. Gaveshana Reethisasthram. Thiruvananthapuram: State Institute of Languages, 2002.
Cita MLAGopalakrishnan, Naduvattom. Gaveshana Reethisasthram. State Institute of Languages, 2002.
Atenció: Aquestes cites poden no estar 100% correctes.