Cita APA (7th ed.)
Hopkins, J. F. (1972). The papers of Henry Clay. The University Press of Kentucky.
Cita Chicago (17th ed.)
Hopkins, James F. The Papers of Henry Clay. Lexington, Kentucky: The University Press of Kentucky, 1972.
Cita MLA (9th ed.)
Hopkins, James F. The Papers of Henry Clay. The University Press of Kentucky, 1972.
Atenció: Aquestes cites poden no estar 100% correctes.