APA (7th ed.) Citation

Perkins, L. F. (2003). The Dutch Twins. Project Gutenberg.

Chicago Style (17th ed.) Citation

Perkins, Lucy Fitch. The Dutch Twins. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Perkins, Lucy Fitch. The Dutch Twins. Project Gutenberg, 2003.

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