എം ഗോവിന്ദന് & M Govindan. (1981). സര്പ്പം (1st.). D C Books.
Citação norma Chicagoഎം ഗോവിന്ദന് and M Govindan. സര്പ്പം. 1st. Kottayam: D C Books, 1981.
Citação norma MLAഎം ഗോവിന്ദന് and M Govindan. സര്പ്പം. 1st. D C Books, 1981.
Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.