Cita APA (7th ed.)

Spyri, J., Bland, C., & Clift, E. (1996). Heidi. Masterwork.

Cita Chicago (17th ed.)

Spyri, Johanna, Celia Bland, i Eva Clift. Heidi. Chicago: Masterwork, 1996.

Cita MLA (9th ed.)

Spyri, Johanna, et al. Heidi. Masterwork, 1996.