Cita APA (7th ed.)

Emerson Jr., E., & Gervinus, G. G. (1902). A History of the Nineteenth Century: Year by year. Collier.

Cita Chicago (17th ed.)

Emerson Jr., Edwin, i Georg Gottfried Gervinus. A History of the Nineteenth Century: Year by Year. New York: Collier, 1902.

Cita MLA (8th ed.)

Emerson Jr., Edwin, i Georg Gottfried Gervinus. A History of the Nineteenth Century: Year by Year. Collier, 1902.