relation: https://eprints.untirta.ac.id/54014/ title: PENERAPAN ASAS KEPATUTAN HUKUM TERHADAP PRAKTIK KONTRAK KOMERSIAL INTERNASIONAL BERBAHASA ASING DIHUBUNGKAN DENGAN UNDANG-UNDANG NOMOR 24 TAHUN 2009 TENTANG BENDERA, BAHASA, DAN LAMBANG NEGARA, SERTA LAGU KEBANGSAAN JUNCTO PERATURAN PRESIDEN NOMOR 63 TAHUN 2019 TENTANG PENGGUNAAN BAHASA INDONESIA (STUDI KASUS PT NKG & PT PCI) creator: UMAH, UMMU KHOERUL subject: K Law (General) subject: KZ Law of Nations description: Law Number 24 of 2009 concerning Flags, Languages, and State Emblems and National Anthem in conjunction with Presidential Regulation Number 63 of 2019 concerning has regulated that Indonesian is the language that must be used in contracts involving Indonesian private institutions, PT NKG and PT PCI in international commercial contracts in their companies only use English. This study aims to analyze the obligation to apply Indonesian in contracts and to find out the application of the principle of legal propriety in international commercial contracts that occur in the PT NKG and PT PCI companies. This research method uses normative-empirical legal research, namely legal research that examines the provisions of legislation (normative), namely Law Number 24 of 2009 Jo Pepres Number 63 of 2019 connected to commercial contracts at PT NKG and PT PCI. The results of the analysis show that Indonesian is the language that must be used in every contract, besides that this study also found out that PT NKG and PT PCI did not fulfill the halal causa so that they did not apply the principle of propriety. Therefore, the results of this study suggest that contracts that occur in Indonesia must use Indonesian so that the principle of propriety in contracts listed in Book III of the Civil Code is still implemented. date: 2023 type: Thesis type: NonPeerReviewed format: text language: id identifier: https://eprints.untirta.ac.id/54014/1/01.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%20Full%20Text.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/3/03.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%2001.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/4/04.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%2002.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/5/05.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%2003.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/6/06.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%2004.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/7/07.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%2005.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/9/08.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%20Ref.pdf format: text language: id identifier: https://eprints.untirta.ac.id/54014/10/09.%20UMMU%20KHOERUL%20UMAH%20_%207773190038%20_%20Lamp%20%281%29.pdf identifier: UMAH, UMMU KHOERUL (2023) PENERAPAN ASAS KEPATUTAN HUKUM TERHADAP PRAKTIK KONTRAK KOMERSIAL INTERNASIONAL BERBAHASA ASING DIHUBUNGKAN DENGAN UNDANG-UNDANG NOMOR 24 TAHUN 2009 TENTANG BENDERA, BAHASA, DAN LAMBANG NEGARA, SERTA LAGU KEBANGSAAN JUNCTO PERATURAN PRESIDEN NOMOR 63 TAHUN 2019 TENTANG PENGGUNAAN BAHASA INDONESIA (STUDI KASUS PT NKG & PT PCI). Master thesis, UNIVERSITAS SULTAN AGENG TIRTAYASA.