APA (7th ed.) Citation

Perkins, L. F. (2009). The Italian Twins. Project Gutenberg.

Chicago Style (17th ed.) Citation

Perkins, Lucy Fitch. The Italian Twins. Project Gutenberg, 2009.

MLA (9th ed.) Citation

Perkins, Lucy Fitch. The Italian Twins. Project Gutenberg, 2009.

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