APA (7th ed.) Citation

Perlman, S. A History of Trade Unionism in the United States.

Chicago Style (17th ed.) Citation

Perlman, Selig. A History of Trade Unionism in the United States.

MLA (9th ed.) Citation

Perlman, Selig. A History of Trade Unionism in the United States.

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