1. Diagnostic Dysmorphology;Aase,1990
2. Elements of morphology: standard terminology;Carey;Am J Med Genet,2009
3. GeneReviews. Available online at www.genereviews.org.
4. Smith's Recognizable Patterns of Human Deformation;Graham,2015
5. Gorlin's Syndromes of the Head and Neck,2010