APA-referens (7:e uppl.)

SOMERVELL, .. (1929). English thought in the nineteenth century. David McKay.

Chicago-referens (17:e uppl.)

SOMERVELL, .D.C. English Thought in the Nineteenth Century. New York: David McKay, 1929.

MLA-referens (9:e uppl.)

SOMERVELL, .D.C. English Thought in the Nineteenth Century. David McKay, 1929.