↑ Cotran, Ramzi S.; Kumar, Vinay; Fausto, Nelson; Nelso Fausto; Robbins, Stanley L.; Abbas, Abul K. (2005). Robbins and Cotran pathologic basis of disease. St. Louis, Mo: Elsevier Saunders. p. 179. ISBN0-7216-0187-1.CS1 maint: multiple names: authors list (link)
↑ James, William; Berger, Timothy; Elston, Dirk (2005). Andrews' Diseases of the Skin: Clinical Dermatology. (10th ed.). Saunders. p 549. ISBN 0-7216-2921-0.
↑ "Klinefelter Syndrome" (HTML). Health Information. National Institute of Health and Human Development. 2007-02-19. สืบค้นเมื่อ 2007-03-24. and "Klinefelter syndrome" (HTML). Genetics Home Reference. National Library of Medicine. 2006. สืบค้นเมื่อ 2007-03-24. both provide statistical estimates.
↑ Russell, Liane Brauch (9 June 1961). "Genetics of Mammalian Sex ChromosomesMOUSE STUDIES THROW LIGHT ON THE FUNCTIONS AND ON THE OCCASIONALLY ABERRANT BEHAVIOR OF SEX CHROMOSOMES". Science. 133 (3467): 1795–1803. doi:10.1126/science.133.3467.1795. line feed character in |title= at position 38 (help)CS1 maint: date and year (link)
↑ Klinefelter, HF Jr; Reifenstein, EC Jr; Albright, F. (1942). "Syndrome characterized by gynecomastia, aspermatogenesis without a-Leydigism and increased excretion of follicle-stimulating hormone". J Clin Endocrinol Metab. 2: 615–624. doi:10.1210/jcem-2-11-615.CS1 maint: date and year (link). Klinefelter, HF (1986). "Klinefelter's syndrome: historical background and development". South Med J. 79 (45): 1089–1093. PMID3529433.CS1 maint: date and year (link) talks about the history of the development of the literature.
