Cita APA (7th ed.)

Elson, H. W. (1889). Side lights on American history. Macmillan.

Cita Chicago (17th ed.)

Elson, Henry William. Side Lights on American History. New York: Macmillan, 1889.

Cita MLA (9th ed.)

Elson, Henry William. Side Lights on American History. Macmillan, 1889.