Gupta, B. L., & Gupta, A. (1995). Text Book of Road, Railway, Bridge & Tunnel Engineering (5th ed.). Standard Publishers Distributors.
Citace podle Chicago (17th ed.)Gupta, B. L., a Amit Gupta. Text Book of Road, Railway, Bridge & Tunnel Engineering. 5th ed. Delhi: Standard Publishers Distributors, 1995.
Citace podle MLA (9th ed.)Gupta, B. L., a Amit Gupta. Text Book of Road, Railway, Bridge & Tunnel Engineering. 5th ed. Standard Publishers Distributors, 1995.
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