APA (7th ed.) Citation

Duncker, M., & Abbott, E. (2012). The History of Antiquity, Vol. I (of VI). Project Gutenberg.

Chicago Style (17th ed.) Citation

Duncker, Max, and Evelyn Abbott. The History of Antiquity, Vol. I (of VI). Project Gutenberg, 2012.

MLA (9th ed.) Citation

Duncker, Max, and Evelyn Abbott. The History of Antiquity, Vol. I (of VI). Project Gutenberg, 2012.

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