APA (7th ed.) Citation

Oliphant, M., Pennell, J., & Riviere, H. P. (2012). The Makers of Modern Rome In Four Books. Project Gutenberg.

Chicago Style (17th ed.) Citation

Oliphant, Mrs., Joseph Pennell, and Henry P. Riviere. The Makers of Modern Rome In Four Books. Project Gutenberg, 2012.

MLA (9th ed.) Citation

Oliphant, Mrs., et al. The Makers of Modern Rome In Four Books. Project Gutenberg, 2012.

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