in reference to

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

en referencia a, con respecto a

concerning or regarding something; in relation to

:
I am writing in reference to your recent inquiry.
Escribo en referencia a su reciente consulta.
His comments were made in reference to the new policy.
Sus comentarios fueron hechos en referencia a la nueva política.