Standley, P. C. (1924). Standley, Paul Carpenter Sept. 9, 1924 [to O. Ames]. Zenodo.
Cita Chicago (17th ed.)Standley, Paul Carpenter. Standley, Paul Carpenter Sept. 9, 1924 [to O. Ames]. Zenodo, 1924.
Cita MLA (9th ed.)Standley, Paul Carpenter. Standley, Paul Carpenter Sept. 9, 1924 [to O. Ames]. Zenodo, 1924.
Atenció: Aquestes cites poden no estar 100% correctes.