APA Edition Citation

Krishna Menon, T. K., & Padmanabha Menon, K. P. (1989). History of Kerala.

Chicago Edition Citation

Krishna Menon, T K., and K P. Padmanabha Menon. History of Kerala. New Dlehi, Asian Educational Services, 1989.

MLA Edition Citation

Krishna Menon, T K., and K P. Padmanabha Menon. History of Kerala. 1989.