APA (7th ed.) Citation

(1971). Flora of the USSR. Bishen Singh Mahendra Pal Singh.

Chicago Style (17th ed.) Citation

Flora of the USSR. Dehra Dun: Bishen Singh Mahendra Pal Singh, 1971.

MLA (9th ed.) Citation

Flora of the USSR. Bishen Singh Mahendra Pal Singh, 1971.

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