"United States Census, 1940," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:K31S-WDW : accessed 17 November 2017), John Giardina in household of Jacob Avery, Stony Point Town, Rockland, New York, United States; citing enumeration district (ED) 44-62, sheet 13A, line 36, family 248, Sixteenth Census of the United States, 1940, NARA digital publication T627. Records of the Bureau of the Census, 1790 - 2007, RG 29. Washington, D.C.: National Archives and Records Administration, 2012, roll 2768.
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