APA (7th ed.) Citation

Spyri, J., Mahingoda, P., & Wijesuriya, U. P. (2010). HEIDI. Gunasena.

Chicago Style (17th ed.) Citation

Spyri, Johanna, Premasiri Mahingoda, and Usula P. Wijesuriya. HEIDI. Colombo: Gunasena, 2010.

MLA (9th ed.) Citation

Spyri, Johanna, et al. HEIDI. Gunasena, 2010.