Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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