{{Author missing}} (or {{author?}} for short) is an inline cleanup template flagging a broken source citation that is missing author information (or at least the specified fact that author information is not available).
This template should never be substituted.
|author={{author missing}}
|last={{author missing}}
|first={{author missing|partial=yes}}
|author=
{{author missing}}
Do not remove the template without fixing the problem one of the following ways.
|last=Familyname
|first=Given Name(s)
|last=Familyname
|first=Given Name(s)
|coauthors=Coauthor name(s), formatted as needed for the citation style being used
|author=Organizational author
|author=<!--none-->
<!--No author specified by source.-->
|author=none
unless you are using {{Cite book}} or another template that recognizes the value none
and hides the output instead of displaying the word "none". Most of the {{Cite}}/{{Citation}}-style templates do not do this (as of January 2010), but certainly should.|author=unknown
, |author=not sure
or anything else vague; any implication other than that the source itself did not specify an author is simply a signal to other editors to re-tag it with {{author missing}}.|archiveurl=
and |archivedate=
parameters). If no archive copy is available, use {{dead link}} after the citation, but leave {{author missing}} as well.