APA (7th ed.) Citation

Andersen, H. C. (1990). Thumbelina. Project Gutenberg.

Chicago Style (17th ed.) Citation

Andersen, Hans Christian. Thumbelina. Champaign, Ill: Project Gutenberg, 1990.

MLA (9th ed.) Citation

Andersen, Hans Christian. Thumbelina. Project Gutenberg, 1990.

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