APA (7th ed.) Citation

Freud, S., Brill, A. A., & Kuttner, A. B. (2011). Reflections on War and Death. Project Gutenberg.

Chicago Style (17th ed.) Citation

Freud, Sigmund, A. A. Brill, and Alfred B. Kuttner. Reflections on War and Death. Project Gutenberg, 2011.

MLA (9th ed.) Citation

Freud, Sigmund, et al. Reflections on War and Death. Project Gutenberg, 2011.

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