Unnikrishnan Puthoor. (1989). Gajarajan Guruvayoor Keshavan. S.P.C.S..
Chicago Edition CitationUnnikrishnan Puthoor. Gajarajan Guruvayoor Keshavan. Kottayam: S.P.C.S., 1989.
Cita MLAUnnikrishnan Puthoor. Gajarajan Guruvayoor Keshavan. S.P.C.S., 1989.
Atenció: Aquestes cites poden no estar 100% correctes.