FOCUS: Fortnightly news digest, volume 2, nos. 1- 5, 1972. Secretariat of the Kerala legislature.
Chicago Style aipamenaFOCUS: Fortnightly News Digest, Volume 2, Nos. 1- 5, 1972. Trivandrum: Secretariat of the Kerala legislature.
MLA aipamenaFOCUS: Fortnightly News Digest, Volume 2, Nos. 1- 5, 1972. Secretariat of the Kerala legislature.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.