Walker, D. B. 1. D. B. W. (1981). Toward a functioning federalism. Winthrop Publishers.
Cita Chicago (17th ed.)Walker, David B. 1927- David Bradstreet Walker. Toward a Functioning Federalism. Cambridge Mass: Winthrop Publishers, 1981.
Cita MLA (9th ed.)Walker, David B. 1927- David Bradstreet Walker. Toward a Functioning Federalism. Winthrop Publishers, 1981.
Atenció: Aquestes cites poden no estar 100% correctes.