Purushothaman Cherukunnam. (2000). Poonthanavum bhakthi prasthanavum (2nd.). State institute of language.
Chicago Style aipamenaPurushothaman Cherukunnam. Poonthanavum Bhakthi Prasthanavum. 2nd. Thiruvananthapuram: State institute of language, 2000.
MLA aipamenaPurushothaman Cherukunnam. Poonthanavum Bhakthi Prasthanavum. 2nd. State institute of language, 2000.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.