Cita APA (7th ed.)

Clemens, S. L. (1917). Sketches, new and old.

Cita Chicago (17th ed.)

Clemens, Samuel Langhorne. Sketches, New and Old. New York and London, 1917.

Cita MLA (9th ed.)

Clemens, Samuel Langhorne. Sketches, New and Old. 1917.