Rashid, A. (1999). An introduction to pteridophyta: Diversity, development, differentiation (2nd ed.). Vikas Publishing House.
Chicago-referens (17:e uppl.)Rashid, A. An Introduction to Pteridophyta: Diversity, Development, Differentiation. 2nd ed. New Delhi: Vikas Publishing House, 1999.
MLA-referens (9:e uppl.)Rashid, A. An Introduction to Pteridophyta: Diversity, Development, Differentiation. 2nd ed. Vikas Publishing House, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.