APA (7th ed.) Citation

Acton, J. E. E. D. A., & Paul, H. W. (2011). Letters of Lord Acton To Mary, Daughter of the Right Hon. W. E. Gladstone. Project Gutenberg.

Chicago Style (17th ed.) Citation

Acton, John Emerich Edward Dalberg Acton, and Herbert W. Paul. Letters of Lord Acton To Mary, Daughter of the Right Hon. W. E. Gladstone. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Acton, John Emerich Edward Dalberg Acton, and Herbert W. Paul. Letters of Lord Acton To Mary, Daughter of the Right Hon. W. E. Gladstone. Project Gutenberg, 2011.

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