Netherlands, Noord-Holland, Civil Registration, 1811-1950," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q2H6-F58V : 8 August 2017), Serpine Charlotte Ouckama in entry for Emma Cornelia Christiani, 27 Dec 1828; citing Birth, Amsterdam, Noord-Holland, Netherlands, Noord-Hollands Archief, Haarlem (Noord-Hollands Archives, Haarlem); FHL microfilm 113,554.