GunnelG.HuldtGunnelG., RutgerR.LagercrantzRutgerR., Occurrence of Toxoplasma Antibodies in Healthy Children in Sundbyberg, „Acta Paediatrica”, 52, 2008, s. 99–100, DOI: 10.1111/j.1651-2227.1963.tb08724.x, ISSN0803-5253 [dostęp 2019-12-08].
GunnelG.HuldtGunnelG., RutgerR.LagercrantzRutgerR., Occurrence of Toxoplasma Antibodies in Healthy Children in Sundbyberg, „Acta Paediatrica”, 52, 2008, s. 99–100, DOI: 10.1111/j.1651-2227.1963.tb08724.x, ISSN0803-5253 [dostęp 2019-12-08].