Urgensi Pengaturan Perusahaan Keluarga di Indonesia berbentuk PT Tertutup (Studi Banding Peraturan Perusahaan Keluarga di Negara Malta, Uni Emirat Arab, Jepang, AS (Negara Bagian Florida) dan Spanyol) = Family Company Regulation Urgency For PT Tertutup In Indonesia(Comparative Study Of Family Company Regulation In Malta, United Arab Emirates, Japan, US (State Of Florida) And Spain)