APA (7th ed.) Citation

Lang, A. (2005). A Short History of Scotland. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lang, Andrew. A Short History of Scotland. Project Gutenberg, 2005.

MLA (9th ed.) Citation

Lang, Andrew. A Short History of Scotland. Project Gutenberg, 2005.

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