International Society for Prenatal Diagnosis. (1981). Prenatal Diagnosis. John Wiley & Sons.
Citação do estilo Chicago (17ª ed.)International Society for Prenatal Diagnosis. Prenatal Diagnosis. Sussex, Inglaterra: John Wiley & Sons, 1981.
Citação MLA (8ª ed.)International Society for Prenatal Diagnosis. Prenatal Diagnosis. John Wiley & Sons, 1981.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.