Kusuman, K. K. (1977). The extremist movement in Kerala.
Chicago Style aipamenaKusuman, K K. The Extremist Movement in Kerala. Trivandrum, Charitram Publications, 1977.
MLA aipamenaKusuman, K K. The Extremist Movement in Kerala. 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.