download (pdf) available from NARA online.
In the wake of "Footnote is now Fold3," the example of an "Online genealogical [citation]" provided a little food for thought. As below, from page 12 of the leaflet:
James J. Collins, 1920 census, Morris, Morris County, New Jersey,
T625, roll 1061, page 6B, ED 29, image 62, Ancestry.com (August