Stevens, S. (1853). Stevens, Samuel Mar. 20, 1853. Zenodo.
Cita Chicago (17th ed.)Stevens, Samuel. Stevens, Samuel Mar. 20, 1853. Zenodo, 1853.
Cita MLA (9th ed.)Stevens, Samuel. Stevens, Samuel Mar. 20, 1853. Zenodo, 1853.
Atenció: Aquestes cites poden no estar 100% correctes.