APA (7th ed.) Citation

Mammen, K. (1942). Kerala culture: Its genesis and early history. City Press.

Chicago Style (17th ed.) Citation

Mammen, K. Kerala Culture: Its Genesis and Early History. Trivandrum: City Press, 1942.

MLA (8th ed.) Citation

Mammen, K. Kerala Culture: Its Genesis and Early History. City Press, 1942.