Duthie, J. F. (1973). Flora of the Upper Gangetic Plain and of the adjacent Siwalik and Sub-Himalayan tracts. Bishen Singh Mahendra Pal Singh.
Lua i Stíl Chicago (17ú heag.)Duthie, J. F. Flora of the Upper Gangetic Plain and of the Adjacent Siwalik and Sub-Himalayan Tracts. Dehra Dun: Bishen Singh Mahendra Pal Singh, 1973.
Lua MLA (8ú heag.)Duthie, J. F. Flora of the Upper Gangetic Plain and of the Adjacent Siwalik and Sub-Himalayan Tracts. Bishen Singh Mahendra Pal Singh, 1973.
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