Author: Dietrichson, L.
Publisher:Alb. Cammermeyers Forlag, Kristiania
Copyright:1892
Author: Menon, Kolatteri Sankara
Publisher:Govt. Press, Trivandrum
Copyright:1927
Author: Damodaran, Mayyanad K. ദാമോദരന് മയ്യനാട് കെ
Publisher:V. V. Press, Kollam
Copyright:1929