Raizada, M. B., & Duthie, J. F. (1976). Supplement to Duthie's Flora of the Upper Gangetic Plain and of the adjacent Siwalik and sub-Himalayan tracts. Bishen Singh Mahendra Pal Singh.
Chicago-referens (17:e uppl.)Raizada, M. B., och John Firminger Duthie. Supplement to Duthie's Flora of the Upper Gangetic Plain and of the Adjacent Siwalik and Sub-Himalayan Tracts. Dehra Dun: Bishen Singh Mahendra Pal Singh, 1976.
MLA-referens (8:e uppl.)Raizada, M. B., och John Firminger Duthie. Supplement to Duthie's Flora of the Upper Gangetic Plain and of the Adjacent Siwalik and Sub-Himalayan Tracts. Bishen Singh Mahendra Pal Singh, 1976.
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