Mason, F., & Brace, J. H. (2006). Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158. Project Gutenberg.
Chicago Style (17th ed.) CitationMason, Francis, and James H. Brace. Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158. Project Gutenberg, 2006.
MLA (9th ed.) CitationMason, Francis, and James H. Brace. Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The Cross-Town Tunnels. Paper No. 1158. Project Gutenberg, 2006.
Warning: These citations may not always be 100% accurate.