Genus Nervilia

Howcroft, N.H.S. 1984. A guide to the Monocotyledons of Papua New Guinea. Part 4. The Orchidaceae (in part). Pp. 121-124, fig. 68-69. PNG University of Technology, Lae.
Petterson, B. 1991. The genus Nervilia (Orchidaceae) in Africa and the Arabian Peninsula. Orchid Monogr. 5: 1-90.
Schlechter, R. 1911. Die Polychondreae (Neottiinae Pfitz.) und ihre systematische Einteilung. Bot. Jahrb. Syst. 45: 375-410.
Seidenfaden, G. 1975. Orchid genera in Thailand VI: Neottioideae Lindl. Dansk Bot. Ark. 32: 1-195. (Nervilia Pp. )