Cita APA (7a ed.)

Sumner, C., & Palmer, B. W. (1988). The papers of Charles Sumner, 1811-1874. Chadwyck-Healey.

Cita Chicago Style (17a ed.)

Sumner, Charles, y Beverly Wilson Palmer. The Papers of Charles Sumner, 1811-1874. Alexandria, VA: Chadwyck-Healey, 1988.

Cita MLA (8a ed.)

Sumner, Charles, y Beverly Wilson Palmer. The Papers of Charles Sumner, 1811-1874. Chadwyck-Healey, 1988.