APA (7th ed.) Citation

United States. Shipping Board. (1923). What's going on in Europe in 1923. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Shipping Board. What's Going on in Europe in 1923. [Place of publication not identified]: [publisher not identified], 1923.

MLA (9th ed.) Citation

United States. Shipping Board. What's Going on in Europe in 1923. [publisher not identified], 1923.