Washington State Planning Council & Chittenden, H. M. (1936). The Cascade low level tunnel: An inquiry as to economic feasiblity of building a tunnel through the Cascade range in Washington for rail and vehicular traffic as proposed by the late Brigadier General H. F.[!] Chittenden.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Washington State Planning Council và Hiram Martin Chittenden. The Cascade Low Level Tunnel: An Inquiry as to Economic Feasiblity of Building a Tunnel Through the Cascade Range in Washington for Rail and Vehicular Traffic as Proposed by the Late Brigadier General H. F.[!] Chittenden. [Olympia, 1936.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Washington State Planning Council và Hiram Martin Chittenden. The Cascade Low Level Tunnel: An Inquiry as to Economic Feasiblity of Building a Tunnel Through the Cascade Range in Washington for Rail and Vehicular Traffic as Proposed by the Late Brigadier General H. F.[!] Chittenden. 1936.