APA (7th ed.) Citation

United States. Department of Commerce. (1941). The St. Lawrence survey: Part 3, Potential traffic on St. Lawrence Seaway. [s.n.].

Chicago Style (17th ed.) Citation

United States. Department of Commerce. The St. Lawrence Survey: Part 3, Potential Traffic on St. Lawrence Seaway. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

United States. Department of Commerce. The St. Lawrence Survey: Part 3, Potential Traffic on St. Lawrence Seaway. [s.n.], 1941.