കൃഷ്ണൻ നമ്പൂതിരി, എ., & Krishnan Namboothiri,M. (2003). അക്ഷര സൗന്ദര്യം. NBS.
Citação norma Chicagoകൃഷ്ണൻ നമ്പൂതിരി, എം, e Krishnan Namboothiri,M. അക്ഷര സൗന്ദര്യം. Kottayam: NBS, 2003.
Citação norma MLAകൃഷ്ണൻ നമ്പൂതിരി, എം, e Krishnan Namboothiri,M. അക്ഷര സൗന്ദര്യം. NBS, 2003.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.