APA (7th ed.) Citation

United States. Department of Commerce. (1941). The St. Lawrence Survey: Part 5, The St. Lawrence Seaway and future transportation requirements. [s.n.].

Chicago Style (17th ed.) Citation

United States. Department of Commerce. The St. Lawrence Survey: Part 5, The St. Lawrence Seaway and Future Transportation Requirements. [Washington]: [s.n.], 1941.

MLA (9th ed.) Citation

United States. Department of Commerce. The St. Lawrence Survey: Part 5, The St. Lawrence Seaway and Future Transportation Requirements. [s.n.], 1941.