Sharma, O. P., Gupta, D. L., & Supple, O. P. (1977). A textbook of railways, bridges and tunnels. Ludhiana: Katson Publishing.
Chicago Style CitationSharma, O. P., D. L. Gupta, and O. P. Supple. A Textbook of Railways, Bridges and Tunnels. Ludhiana: Katson Publishing, 1977.
MLA CitationSharma, O. P., D. L. Gupta, and O. P. Supple. A Textbook of Railways, Bridges and Tunnels. Ludhiana: Katson Publishing, 1977.
Warning: These citations may not always be 100% accurate.