Rao, K. S. (1995). Introduction to partial differential equations (6th ed.). Prentice-Hall of India.
Lua i Stíl Chicago (17ú heag.)Rao, K. Sankara. Introduction to Partial Differential Equations. 6th ed. New Delhi: Prentice-Hall of India, 1995.
Lua MLA (8ú heag.)Rao, K. Sankara. Introduction to Partial Differential Equations. 6th ed. Prentice-Hall of India, 1995.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.