{{CIAAW2011}} adds a full reference (<ref>...</ref>
) for the standard atomic weight (Ar, standard) of chemical elements as defined by IUPAC commission CIAAW (2011). The source is:
This template has options to use by refname, and as plain source (no <ref> tag). See #Options.
|1=plain
(no <ref>
tag)|1=name, refname
<ref "CIAW2011" />
, for a second usage))|ref=harv
About handling the uncertainty in the values, including the [ ] range values: