APA (7th ed.) Citation

Roberts, M., Folkard, C., & Gilbert, W. S. (2012). Ruins and Old Trees, Associated with Memorable Events in English History. Project Gutenberg.

Chicago Style (17th ed.) Citation

Roberts, Mary, Charles Folkard, and W. S. Gilbert. Ruins and Old Trees, Associated with Memorable Events in English History. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Roberts, Mary, et al. Ruins and Old Trees, Associated with Memorable Events in English History. Project Gutenberg, 2012.

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