Gaya APA

Sehgal, S. (1980). A text book on highway engineering and airports (2nd ed.). Ram Nagar, New Delhi: S. Chand & Company, Ltd..

Gaya MLA

Sehgal, S.B.. "A text book on highway engineering and airports". 2nd ed. Ram Nagar, New Delhi: S. Chand & Company, Ltd., 1980. Text.