Referred

The work of Feuerbach is frequently referred to.

Hawaii is often referred to as "The Pearl of the Pacific."

New York is sometimes referred to as the melting pot of races.

The period is referred to as the Stone Age.

In the speech, he referred to the strength of the company.

In Britain a truck is referred to as a lorry.

America is often referred to as a melting pot.

You referred to my father.

The speaker sometimes referred to his notes.

The speaker occasionally referred to his notes.