GHATAK A. (1978). OPTICS. T M H.
Lua i Stíl Chicago (17ú heag.)GHATAK A. OPTICS. T M H, 1978.
Lua MLA (9ú heag.)GHATAK A. OPTICS. T M H, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)