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Anggara, Tirta Dwi (2024) Hubungan Antara Learned Helplessness dengan Persepsi terhadap Tindakan Premanisme oleh Tukang Parkir Liar di Kota Surabaya. (The Relationship Between Learned Helplessness and Perception of Premanism Actions by Illegal Parking Attendants in the City of Surabaya). Undergraduate thesis, Universitas 17 Agustus 1945 Surabaya.