Krishna Iyer, L. A. (1968). Social history of Kerala. Book Centre Publications.
Lua i Stíl Chicago (17ú heag.)Krishna Iyer, L. A. Social History of Kerala. Madras: Book Centre Publications, 1968.
Lua MLA (8ú heag.)Krishna Iyer, L. A. Social History of Kerala. Book Centre Publications, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.