APA Edition Citation

Sharma, O. P. (2006). Pteridophyta (2nd ed.). MacMillan India Limited.

Chicago Edition Citation

Sharma, O P. Pteridophyta. 2nd ed. Delhi: MacMillan India Limited, 2006.

MLA Edition Citation

Sharma, O P. Pteridophyta. 2nd ed. MacMillan India Limited, 2006.

Warning: These citations may not always be 100% accurate.