APA-viite (7. p.)
Singh, G., & Singh, J. (1991). Highway engineering (rev. & enlarged ed.). Standard publishers distributors.
Chicago-viite (17. p.)
Singh, Gurcharan, ja Jagdish Singh. Highway Engineering. rev. & enlarged ed. Delhi: Standard publishers distributors, 1991.
MLA-viite (9. p.)
Singh, Gurcharan, ja Jagdish Singh. Highway Engineering. rev. & enlarged ed. Standard publishers distributors, 1991.
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