Easa, P. S. KFRI Handbook No.17: Biodiversity documentation for Kerala Part 5: Pteridophytes. Kerala forest research institute.
Chicago Edition CitationEasa, P S. KFRI Handbook No.17: Biodiversity Documentation for Kerala Part 5: Pteridophytes. Peechi: Kerala forest research institute.
MLA Edition CitationEasa, P S. KFRI Handbook No.17: Biodiversity Documentation for Kerala Part 5: Pteridophytes. Kerala forest research institute.
Warning: These citations may not always be 100% accurate.