Rao, A. S. (1979). Orchids of India. National Book Trust, India.
Lua i Stíl Chicago (17ú heag.)Rao, Aragula Sathyanarayana. Orchids of India. New Delhi: National Book Trust, India, 1979.
Lua MLA (8ú heag.)Rao, Aragula Sathyanarayana. Orchids of India. National Book Trust, India, 1979.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.