APA (7th ed.) Citation

Halfer, J., & Dieck, H. (2012). The Progress of the Marbling Art From Technical Scientific Principles. Project Gutenberg.

Chicago Style (17th ed.) Citation

Halfer, Josef, and Herman Dieck. The Progress of the Marbling Art From Technical Scientific Principles. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Halfer, Josef, and Herman Dieck. The Progress of the Marbling Art From Technical Scientific Principles. Project Gutenberg, 2012.

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