APA (7th ed.) Citation

United States. Board of Engineers for Rivers and Harbors. (1938). The Panama Canal and its Ports, Revised 1938. [s.n.].

Chicago Style (17th ed.) Citation

United States. Board of Engineers for Rivers and Harbors. The Panama Canal and Its Ports, Revised 1938. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Board of Engineers for Rivers and Harbors. The Panama Canal and Its Ports, Revised 1938. [s.n.], 1938.