APA-referens (7:e uppl.)

Higginson, T. W. (1902). Henry Wadsworth Longfellow. Houghton Mifflin.

Chicago-referens (17:e uppl.)

Higginson, Thomas Wentworth. Henry Wadsworth Longfellow. Boston: Houghton Mifflin, 1902.

MLA-referens (9:e uppl.)

Higginson, Thomas Wentworth. Henry Wadsworth Longfellow. Houghton Mifflin, 1902.