1. Cassidy and Allanson. The Management of Genetic Syndromes.
2. Hennekam R, Allanson J, Krantz I. Gorlin Syndromes of the Head and Neck. 6th edition.
3. Jones KL. Smith’s Recognizable Patterns of Human Malformation.
4. Gorlin Syndromes of the Head and Neck. p. 245.
5. Jones; Smith’s recognizable Patterns of Human Malformation. p. 453–5.