Mammen, K. (1942). Kerala culture: Its genesis and early history. City Press.
Lua i Stíl Chicago (17ú heag.)Mammen, K. Kerala Culture: Its Genesis and Early History. Trivandrum: City Press, 1942.
Lua MLA (8ú heag.)Mammen, K. Kerala Culture: Its Genesis and Early History. City Press, 1942.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.