I list only those books with at least 4,000 citations.

1. John Rawls, A Theory of Justice, 126,000
2. John Rawls, Political Liberalism, 34,200
3. Robert Nozick, Anarchy, State and Utopia, 32,300
4. Amartya Sen, The Idea of Justice, 20,700
5. Will Kymlicka, Multicultural Citizenship, 20,200
6. Michael Walzer, Spheres of Justice, 17,000
7. Martha Nussbaum, Women and Human Development, 16,500
8. Miranda Fricker, Epistemic Injustice, 16,300
9. Martha Nussbaum, Creating Capabilities, 13,000
10. John Rawls, Justice as Fairness: A Restatement, 12,600
11. Michael Sandel, Liberalism and the Limits of Justice, 12,500
12. John Rawls, The Law of Peoples, 12,200
13. Joseph Raz, The Morality of Freedom, 11,800
14. Charles Mills, The Racial Contract, 10,000
15. Martha Nussbaum, Frontiers of Justice, 10,000
16. Philip Pettit, Republicanism: A Theory of Freedom and Government, 7,800
17. Thomas Pogge, World Poverty and Human Rights, 6,900
18. Ronald Dworkin, Sovereign Virtue, 6,800
19. Will Kymlicka, Contemporary Political Philosophy, 6,800
20. Susan Moller Okin, Justice, Gender, and the Family, 6,700
21. David Gauthier, Morals by Agreement, 6,200
22. Will Kymlicka, Liberalism, Community and Culture, 5,700
23. Brian Barry, Culture and Inequality, 5,000
24. David Miller, On Nationality, 5,000
25. Charles Beitz, Political Theory and International Relations, 4,900
26. Will Kymlicka, Politics and the Vernacular, 4,600
27. Bruce Ackerman, Social Justice in the Liberal State, 4,200
28. Martha Nussbaum, Sex and Social Justice, 4,100