APA (7th ed.) Citation

Drude, P. (1902). The Theory of optics. Longmans, Green, and Co.

Chicago Style (17th ed.) Citation

Drude, Paul. The Theory of Optics. London: Longmans, Green, and Co, 1902.

MLA (9th ed.) Citation

Drude, Paul. The Theory of Optics. Longmans, Green, and Co, 1902.

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