Cita APA (7a ed.)

Gray, A. (1873). VII.—Sequoia and its history. Zenodo.

Cita Chicago Style (17a ed.)

Gray, Asa. VII.—Sequoia and Its History. Zenodo, 1873.

Cita MLA (9a ed.)

Gray, Asa. VII.—Sequoia and Its History. Zenodo, 1873.