California Code, Code of Civil Procedure - CCP § 412.20

(1) The title of the court in which the action is pending.

(2) The names of the parties to the action.

(3) A direction that the defendant file with the court a written pleading in response to the complaint within 30 days after summons is served on him or her.

(4) A notice that, unless the defendant so responds, his or her default will be entered upon application by the plaintiff, and the plaintiff may apply to the court for the relief demanded in the complaint, which could result in garnishment of wages, taking of money or property, or other relief.

(5) The following statement in boldface type: “You may seek the advice of an attorney in any matter connected with the complaint or this summons. Such attorney should be consulted promptly so that your pleading may be filed or entered within the time required by this summons.”

(6) The following introductory legend at the top of the summons above all other matter, in boldface type, in English and Spanish:

“Notice! You have been sued. The court may decide against you without your being heard unless you respond within 30 days. Read information below.”