Kunhabdulla, P., & Sethu. (1982). Navagrahangalude thadavara.
Chicago Style aipamenaKunhabdulla, Punathil, and Sethu. Navagrahangalude Thadavara. 1982.
MLA aipamenaKunhabdulla, Punathil, and Sethu. Navagrahangalude Thadavara. 1982.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.