Sharma, O. P. (2012). Pteridophyta (2nd ed.). McGraw Hill Education (India).
Lua i Stíl Chicago (17ú heag.)Sharma, O. P. Pteridophyta. 2nd ed. New Delhi: McGraw Hill Education (India), 2012.
Lua MLA (9ú heag.)Sharma, O. P. Pteridophyta. 2nd ed. McGraw Hill Education (India), 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.