APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (8. p.)

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