Rao, K. L. (1964). Rivers and their development. Andhra University Press.
Lua i Stíl Chicago (17ú heag.)Rao, K. L. Rivers and Their Development. Waltair: Andhra University Press, 1964.
Lua MLA (8ú heag.)Rao, K. L. Rivers and Their Development. Andhra University Press, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.