APA (7th ed.) Citation

Bolton, S. K. (2012). Famous European Artists. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bolton, Sarah Knowles. Famous European Artists. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Bolton, Sarah Knowles. Famous European Artists. Project Gutenberg, 2012.

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