You will need:
Format:
‘Name of Person’ (Year of census) Census return for street, place, registration subdistrict, county. Public Record Office: piece number, folio number, page number.
Example:
‘Thomas Wilson’ (1861) Census return for New Row, Willington, St Oswald subdistrict, County Durham. Durham Record Office: PRO RG9/3739, folio 74, p.11.
In-text citation: (‘Thomas Wilson, 1861)