APA (7th ed.) Citation

Bryce, J. B. (2013). The Holy Roman Empire. Project Gutenberg.

Chicago Style (17th ed.) Citation

Bryce, James Bryce. The Holy Roman Empire. Project Gutenberg, 2013.

MLA (9th ed.) Citation

Bryce, James Bryce. The Holy Roman Empire. Project Gutenberg, 2013.

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