Conflict and compromise history of British political thought, 1593-1900 by Harrison, Wilfrid

Political argument. by Barry, Brian M.

The challenge of politics ideas and issues by Rubinstein, Alvin Z.

Dictionary of international relations and politics systematic and alphabetical in four languages German, English/American, French, Spanish by Haensch, Gunther

Government and opposition.

https://www.cambridge.org/core/journals/government-and-opposition

The challenges to democracy consensus and extremism in American politics by Havens, Murray Clark

The promise of American life by Croly, Herbert David 1869-1930

The English libertarian heritage, from the writings of John Trenchard and Thomas Gordon in the Independent Whig and Cato's Letters by Jacobson, David Louis 1933-

Selected political writings by Thomas Aquinas, Saint 1225n-1274

Maxims and reflections of a Renaissance statesman (Ricordi) by Guicciardini, Francesco 1483-1540