APA (7th ed.) Citation
Knapp, H. J. (1877). On Tumors of the optic nerve.
Chicago Style (17th ed.) Citation
Knapp, Hermann Jakob. On Tumors of the Optic Nerve. Philadelphia, 1877.
MLA (9th ed.) Citation
Knapp, Hermann Jakob. On Tumors of the Optic Nerve. 1877.
Warning: These citations may not always be 100% accurate.