Joseph, J. (1987). Orchids of Nilgiris. Botanical Survey of India.
Chicago-čujuhus (17. p.)Joseph, J. Orchids of Nilgiris. New Delhi: Botanical Survey of India, 1987.
MLA-čujuhus (9. p.)Joseph, J. Orchids of Nilgiris. Botanical Survey of India, 1987.
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