- About Klinefelter syndrome. National Human Genome Research Institute. https://www.genome.gov/Genetic-Disorders/Klinefelter-Syndrome. Accessed Aug. 26, 2024.
- Klinefelter syndrome (KS). Eunice Kennedy Shriver National Institute of Child Health and Human Development. https://www.nichd.nih.gov/health/topics/klinefelter. Accessed Aug. 26, 2024.
- Ferri FF. Klinefelter syndrome. In Ferri's Clinical Advisor 2025. Elsevier; 2025. https://www.clinicalkey.com. Accessed Aug. 26, 2024.
- Straus JF III, et al., eds. Differences of sex development. In: Yen and Jaffe's Reproductive Endocrinology. 9th ed. Elsevier; 2024. https://www.clinicalkey.com. Accessed Aug. 26, 2024.
- Butler G, et al. Klinefelter syndrome: Going beyond the basics. Archives of Disease in Childhood. 2023; doi:10.1136/archdischild-2020-320831.
- White M, et al. Klinefelter syndrome: What should we tell prospective parents? Prenatal Diagnosis. 2023; doi:10.1002/pd.6250.
- Mayo Clinic Laboratories. MaterniT21 Plus. https://www.mayocliniclabs.com/test-catalog/overview/57852#Clinical-and-Interpretive. Accessed Sept. 10, 2019.
- Medical review (expert opinion). Mayo Clinic. Aug. 30, 2024.