APA (7th ed.) Citation

Spyri, J. (2003). Erick and Sally. Project Gutenberg.

Chicago Style (17th ed.) Citation

Spyri, Johanna. Erick and Sally. Project Gutenberg, 2003.

MLA (9th ed.) Citation

Spyri, Johanna. Erick and Sally. Project Gutenberg, 2003.

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