^Search mainspace/all spaces for 'Foobar Society'. Good to find citations without URLs or DOIs, but will have several false positives, especially for generic sounding publishers with short names.
^Search for URLs with foobar.org in them. Can have some false positives if other URLs have a domain that ends with foobar.org, like jamesfoobar.org. The lock and chain symbols will make use of Special:Linksearch.
^Search for DOI matches. Fewest false positives, but assumes there is DOI.
^Search for ISSN matches. Few false positives, but assumes there is ISSN.