സി രാധാകൃഷ്ണന് & C Radhakrishnan. (2004). പൂജ്യം. D C Books.
Citação norma Chicagoസി രാധാകൃഷ്ണന് and C Radhakrishnan. പൂജ്യം. Kottayam: D C Books, 2004.
Citação norma MLAസി രാധാകൃഷ്ണന് and C Radhakrishnan. പൂജ്യം. D C Books, 2004.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.