APA (7th ed.) Citation

(1931). Shipments by water carriers between Atlantic coast ports and Pacific coast ports. [publisher not identified].

Chicago Style (17th ed.) Citation

Shipments by Water Carriers Between Atlantic Coast Ports and Pacific Coast Ports. Washington, D.C.: [publisher not identified], 1931.

MLA (9th ed.) Citation

Shipments by Water Carriers Between Atlantic Coast Ports and Pacific Coast Ports. [publisher not identified], 1931.