APA (7th ed.) Citation

United States. Shipping Board. (1918). Merchant mariner. P.O. Print.

Chicago Style (17th ed.) Citation

United States. Shipping Board. Merchant Mariner. Boston, Massachusetts: P.O. Print, 1918.

MLA (9th ed.) Citation

United States. Shipping Board. Merchant Mariner. P.O. Print, 1918.

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