APA (7th ed.) Citation

Spyri, J. Heidi. Priory Books.

Chicago Style (17th ed.) Citation

Spyri, Johanna. Heidi. Bridlington: Priory Books.

MLA (9th ed.) Citation

Spyri, Johanna. Heidi. Priory Books.

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