APA (7th ed.) Citation

Beringer, C., & Beringer, J. J. (2006). A Text-book of Assaying: For the Use of Those Connected with Mines. Project Gutenberg.

Chicago Style (17th ed.) Citation

Beringer, C., and J. J. Beringer. A Text-book of Assaying: For the Use of Those Connected with Mines. Project Gutenberg, 2006.

MLA (9th ed.) Citation

Beringer, C., and J. J. Beringer. A Text-book of Assaying: For the Use of Those Connected with Mines. Project Gutenberg, 2006.

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