APA način citiranja (7. izdanje)

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

Čikaški stil citiranja (17. izdanje)

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

MLA način citiranja (9. izdanje)

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