APA (7th ed.) Citation

(1920). U.S. trade directory for foreign buyers. U.S. Trade Directory.

Chicago Style (17th ed.) Citation

U.S. Trade Directory for Foreign Buyers. New York: U.S. Trade Directory, 1920.

MLA (9th ed.) Citation

U.S. Trade Directory for Foreign Buyers. U.S. Trade Directory, 1920.

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