APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

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