APA (7th ed.) Citation

United States. Shipping Board & ProQuest (Firm). (1919). Government-owned ships. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Shipping Board and ProQuest (Firm). Government-owned Ships. Washington: [publisher not identified], 1919.

MLA (9th ed.) Citation

United States. Shipping Board and ProQuest (Firm). Government-owned Ships. [publisher not identified], 1919.

Warning: These citations may not always be 100% accurate.