Richardson, Darcy G. Others: Third Party Politics from the Nation's Founding to the Rise and Fall of the Greenback-LaborParty. Vol. 1. iUniverse, 2004. Rosenstone
美國绿党(英語:Green Party of the United States,缩写为GPUS)是一个在1991年由美国众多州的绿党自愿结合形成的全国性政党。截至2023年,绿党是美國第四大政黨,僅次於自由意志黨。 伴随着美国绿党的建立,原先注重于非选举运动的USA绿党(Greens/Green Party
Families Party. Ballot Access News. [2023-07-08]. (原始内容存档于2022-11-10). Minnesota Independence Party Becomes State Affiliate of the Alliance Party. Ballot
American Political Development: Union, Party, and State, 1875-1920 (1986) Orth, Samuel P. The Armies of Labor: A Chronicle of the Organized Wage-Earners