APA (7th ed.) Citation

Lang, T. B. (2012). An Historical Summary of the Post Office in Scotland. Project Gutenberg.

Chicago Style (17th ed.) Citation

Lang, T. B. An Historical Summary of the Post Office in Scotland. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Lang, T. B. An Historical Summary of the Post Office in Scotland. Project Gutenberg, 2012.

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