APA (7th ed.) Citation

Spyri, J. (2006). The story of Heidi. Usborne.

Chicago Style (17th ed.) Citation

Spyri, Johanna. The Story of Heidi. London: Usborne, 2006.

MLA (9th ed.) Citation

Spyri, Johanna. The Story of Heidi. Usborne, 2006.

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