APA (7th ed.) Citation

Gray, A. (1870). Gray, Asa Oct. 18, 1870 [to Joseph Henry]. Zenodo.

Chicago Style (17th ed.) Citation

Gray, Asa. Gray, Asa Oct. 18, 1870 [to Joseph Henry]. Zenodo, 1870.

MLA (9th ed.) Citation

Gray, Asa. Gray, Asa Oct. 18, 1870 [to Joseph Henry]. Zenodo, 1870.

Warning: These citations may not always be 100% accurate.