«Animal Diversity (Third Edition)».Chapter 8: Acoelomate Bilateral Animals. McGraw-Hill,2002. Arxivat de l'original el May 17, 2016.[Consulta: 25 octubre 2012].
«Animal Diversity (Third Edition)».Chapter 8: Acoelomate Bilateral Animals. McGraw-Hill,2002. Arxivat de l'original el May 17, 2016.[Consulta: 25 octubre 2012].
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«Behind the Scenes: Edgar Martins Speaks».,31-07-2009.«“My starting point for this construction was a simple statement which I once read (and which does not necessarily reflect my personal views): ‘Only a bad architect relies on symmetry; instead of symmetrical layout of blocks, masses and structures, Modernist architecture relies on wings and balance of masses.’»