1. Staff TSRH. Disorders of the upper extremity: ulnar polydactyly. In: Herring J, editor. Tachdjians pediatric orthopedics: from the Texas Scottish rite hospital for children. 4th ed. Philadelphia, PA: Elsevier Saunders; 2008. p. 556–8.
2. Temtamy SA, McKusick VA. The genetics of hand malformations. Birth Defects Orig Artic Ser. 1978;14(3):i–xviii, 1–619. Epub 1978/01/01.
3. Watson BT, Hennrikus WL. Postaxial type-B polydactyly. Prevalence and treatment. J Bone Joint Surg Am. 1997;79(1):65–8. Epub 1997/01/01
4. Woolf CM, Myrianthopoulos NC. Polydactyly in American negroes and whites. Am J Hum Genet. 1973;25(4):397–404. Epub 1973/07/01
5. Umm-e-Kalsoom, Basit S, Kamran-ul-Hassan Naqvi S, Ansar M, Ahmad W. Genetic mapping of an autosomal recessive postaxial polydactyly type A to chromosome 13q13.3-q21.2 and screening of the candidate genes. Human genetics. 2012;131(3):415–22. Epub 2011/08/31