Each citation must match only one reference in the library.
When Instant Formatting is turned off, a temporary citation is enclosed in citation delimiters and typically includes the first author’s last name, the year of publication, and the record number for that reference: {Schwartz, 1990 #5}.
Within one set of citation delimiters you can have several citations separated by semicolons:
{Schwartz,1990#5;Billoski,1992#28}.
Curly braces ("{" and "}") are the default temporary citation delimiters, although they can be changed (see Temporary Citations). EndNote looks for these markers to find citations in your word processing documents.
In addition to the citation delimiters, there are other possible components to a temporary citation: Author, Year, Record Number, Prefix Text, Suffix Text, and any other text found in the record. You can also use a special tag to format the citation as Author (Year).
Any part of a temporary citation can be omitted, as long as enough information remains to match just one reference in the library. If you omit an author or year from a temporary citation, those components are omitted from the formatted citation as well—although you can change this preference. See Omitting Authors or Years from Citations for more information. Additionally, you can omit the entire citation so that the entry only appears in the bibliography.