Lama, R.Y. et al. 2014. <i>Acampe Rigida</i> (Buch. - Ham. Ex J.E. Smith) P.F. Hunt (orchidaceae): A New Record for Darjeeling Himalaya of West Bengal, India. Indian Forester. 140, 7 (Jul. 2014), 730–732. DOI:https://doi.org/10.36808/if/2014/v140i7/51416.