APA način citiranja (7. izdanje)
Stenzel Byrnes, I., Stenzel, A., & Cropp, J. (2007). The power of two: A twin triumph over cystic fibrosis (Updated and expanded edition.). University of Missouri Press.
Čikaški stil citiranja (17. izdanje)
Stenzel Byrnes, Isabel, Anabel Stenzel, i Jennifer Cropp. The Power of Two: A Twin Triumph over Cystic Fibrosis. Updated and expanded edition. Columbia, Missouri: University of Missouri Press, 2007.
MLA način citiranja (9. izdanje)
Stenzel Byrnes, Isabel, et al. The Power of Two: A Twin Triumph over Cystic Fibrosis. Updated and expanded edition. University of Missouri Press, 2007.
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