Cita APA (7th ed.)

Stenzel Byrnes, I., & Stenzel, A. (2007). The power of two: A twin triumph over cystic fibrosis. University of Missouri Press.

Cita Chicago (17th ed.)

Stenzel Byrnes, Isabel, i Anabel Stenzel. The Power of Two: A Twin Triumph over Cystic Fibrosis. Columbia: University of Missouri Press, 2007.

Cita MLA (9th ed.)

Stenzel Byrnes, Isabel, i Anabel Stenzel. The Power of Two: A Twin Triumph over Cystic Fibrosis. University of Missouri Press, 2007.