N.J. Stat. Ann. § 30:6D-7

Every developmentally disabled person in residence or attendance at any facility shall be entitled to a writ of habeas corpus upon proper petition by such person, or a parent, guardian, representative of guardian services, attorney or other interested party, to any court of competent jurisdiction in the county in which such person is residing or in which such facility is located, and shall further be entitled to enforce any of the rights herein stated by civil action or other remedy otherwise available by common law or statute.