Não informado. (2012). Publications from the University of Pittsburgh, School of Medicine. University of Pittsburgh.
Citação do estilo Chicago (17ª ed.)Não informado. Publications from the University of Pittsburgh, School of Medicine. Pittsburgh, Pa: University of Pittsburgh, 2012.
Citação MLA (8ª ed.)Não informado. Publications from the University of Pittsburgh, School of Medicine. University of Pittsburgh, 2012.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.