APA (7th ed.) Citation

United States Tariff Commission. (1920). Subject index to tariff information surveys and reports. GPO.

Chicago Style (17th ed.) Citation

United States Tariff Commission. Subject Index to Tariff Information Surveys and Reports. [Washington]: GPO, 1920.

MLA (9th ed.) Citation

United States Tariff Commission. Subject Index to Tariff Information Surveys and Reports. GPO, 1920.

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