APA (7th ed.) Citation

Spyri, J., & Smith, J. W. (1996). Heidi. W. Morrow.

Chicago Style (17th ed.) Citation

Spyri, Johanna, and Jessie Willcox Smith. Heidi. New York: W. Morrow, 1996.

MLA (9th ed.) Citation

Spyri, Johanna, and Jessie Willcox Smith. Heidi. W. Morrow, 1996.