in reference to

US /ɪn ˈref.ər.əns tuː/
UK /ɪn ˈref.ər.əns tuː/
"in reference to" picture
1.

concerning or regarding something; in relation to

:
•
I am writing in reference to your recent inquiry.
•
His comments were made in reference to the new policy.
:
regardingconcerningwith respect towith regard toabout
:
referencereferrefer toreference book