APA (7th ed.) Citation
Singh, G., & Singh, J. (1991). Highway engineering (rev. & enlarged ed.). Standard publishers distributors.
Chicago Style (17th ed.) Citation
Singh, Gurcharan, and Jagdish Singh. Highway Engineering. rev. & enlarged ed. Delhi: Standard publishers distributors, 1991.
MLA (9th ed.) Citation
Singh, Gurcharan, and Jagdish Singh. Highway Engineering. rev. & enlarged ed. Standard publishers distributors, 1991.
Warning: These citations may not always be 100% accurate.