APA (7th ed.) Citation

Kahn, O. H. (1917). The war and business. [publisher not identified].

Chicago Style (17th ed.) Citation

Kahn, Otto H. The War and Business. [New York? N.Y.]: [publisher not identified], 1917.

MLA (9th ed.) Citation

Kahn, Otto H. The War and Business. [publisher not identified], 1917.