Cita APA (7th ed.)
Longfellow, H. W. (1856). Hyperion.
Cita Chicago (17th ed.)
Longfellow, Henry Wadsworth. Hyperion. Leipzig, 1856.
Cita MLA (9th ed.)
Longfellow, Henry Wadsworth. Hyperion. 1856.
Atenció: Aquestes cites poden no estar 100% correctes.