Reference multiple subfloated figures using \ref{X,Y,Z} to give Fig. 1a,1b,1c in text

Just use \cref or \Cref from cleveref package to reference multiple labels in one command.

For example, \cref{fig1,fig2,fig3} is valid. And use \Cref for capitals.

without package cleveref the command must be \ref{..},\ref{...}