Upaya Meningkatkan Moral Judgment yang Mempengaruhi Belief Pedagang Kaki Lima terhadap Fungsi dan Hak Penggunaan Trotoar di Jalan Margonda Raya Depok = An Effort to Upgrade the Moral Judgment Level Affecting Belief of the Street-vendors regarding Sidewalk Function and Use on Margonda Raya Street, Depok