APA (7th ed.) Citation

United States. Department of State. (1916). Preparation of trade letters. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Department of State. Preparation of Trade Letters. Washington: [publisher not identified], 1916.

MLA (9th ed.) Citation

United States. Department of State. Preparation of Trade Letters. [publisher not identified], 1916.

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