APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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