APA (7th ed.) Citation

Graetz, A. (2007). Pearl and Periwinkle. Project Gutenberg.

Chicago Style (17th ed.) Citation

Graetz, Anna. Pearl and Periwinkle. Project Gutenberg, 2007.

MLA (9th ed.) Citation

Graetz, Anna. Pearl and Periwinkle. Project Gutenberg, 2007.

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