APA (7th ed.) Citation

Birkhead, A. (2007). Heroes of Modern Europe. Project Gutenberg.

Chicago Style (17th ed.) Citation

Birkhead, Alice. Heroes of Modern Europe. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Birkhead, Alice. Heroes of Modern Europe. Project Gutenberg, 2007.

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