APA (7th ed.) Citation

Chopra, G. L. (1981). Lichens of the Himalayas. Bishen Singh Mahendra Pal Singh.

Chicago Style (17th ed.) Citation

Chopra, Govardhan Lal. Lichens of the Himalayas. Dehra-Dun: Bishen Singh Mahendra Pal Singh, 1981.

MLA (9th ed.) Citation

Chopra, Govardhan Lal. Lichens of the Himalayas. Bishen Singh Mahendra Pal Singh, 1981.

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