United States. War Department. (1932). Lines to Panama Canal: Services of lines of ocean vessels through Panama Canal and to its terminal ports; passenger connections from Panama Canal; air services to and from Canal Zone. Panama Canal Press.
Chicago Style (17th ed.) CitationUnited States. War Department. Lines to Panama Canal: Services of Lines of Ocean Vessels Through Panama Canal and to Its Terminal Ports; Passenger Connections from Panama Canal; Air Services to and from Canal Zone. [Washington]: Panama Canal Press, 1932.
MLA (9th ed.) CitationUnited States. War Department. Lines to Panama Canal: Services of Lines of Ocean Vessels Through Panama Canal and to Its Terminal Ports; Passenger Connections from Panama Canal; Air Services to and from Canal Zone. Panama Canal Press, 1932.