SEHGAL, S., & SEHGAL, S. (1980). A Text Book On Highway Engineering And Airports For Degree And A.m. E. Students S.b. Sehgal And K.l. Bhanot. S. Chand & Company.
Lua i Stíl Chicago (17ú heag.)SEHGAL, S.B, agus S.B SEHGAL. A Text Book On Highway Engineering And Airports For Degree And A.m. E. Students S.b. Sehgal And K.l. Bhanot. S. Chand & Company, 1980.
Lua MLA (8ú heag.)SEHGAL, S.B, agus S.B SEHGAL. A Text Book On Highway Engineering And Airports For Degree And A.m. E. Students S.b. Sehgal And K.l. Bhanot. S. Chand & Company, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.