He is referring to his parents, I think.

She refers to her parents as radically political hippies turned yuppies.

Ms. Bourgeois's work occasionally refers to her parents, who were tapestry restorers.

She refers to her parents as "the most hard-working, generous and genuine people I know."

Denis frequently refers on air to her parents, who resided in Calgary.

"I only wish they had told me about 'everything'," she said, referring to her parents and their adventures in my own time.

He refers to Darnley's noble parents as his patrons.

He refers to his adoptive parents as "Mom and Dad."

She was not referring to her parents, in-laws or friends.