APA (7th ed.) Citation

Bucke, C. (2012). Ruins of Ancient Cities (Vol. I of II). Project Gutenberg.

Chicago Style (17th ed.) Citation

Bucke, Charles. Ruins of Ancient Cities (Vol. I of II). Project Gutenberg, 2012.

MLA (9th ed.) Citation

Bucke, Charles. Ruins of Ancient Cities (Vol. I of II). Project Gutenberg, 2012.

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