APA (7th ed.) Citation

Collings, H. T. (1928). Tariff problems of the United States. The American Academy of Political and Social Science.

Chicago Style (17th ed.) Citation

Collings, Harry Thomas. Tariff Problems of the United States. Philadelphia: The American Academy of Political and Social Science, 1928.

MLA (9th ed.) Citation

Collings, Harry Thomas. Tariff Problems of the United States. The American Academy of Political and Social Science, 1928.

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