APA (7th ed.) Citation

Delaborde, H., & Stevenson, R. A. M. (2013). Engraving: Its Origin, Processes, and History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Delaborde, Henri, and R. A. M. Stevenson. Engraving: Its Origin, Processes, and History. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Delaborde, Henri, and R. A. M. Stevenson. Engraving: Its Origin, Processes, and History. Project Gutenberg, 2013.

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