4 1 50 Sistem Penyelenggaraan Universitas Terbuka 2023/2024 Paken Pandiangan Primary Author Kartono Primary Author Milwan Primary Author Timbul Pardede Primary Author Pepi Rospina Pertiwi Primary Author Tedjo Djatmiko Primary Author Firmansyah Primary Author mixed material 9786231530684 Tangerang selatan UNIVERSITAS TERBUKA 2023 Haris Firmansyah Primary Author mixed material 9786022791157 Yogyakarta Saufa 2014 Firmansyah Diyata Primary Author mixed material 9789797574123 Jakarta Kawan Pustaka 2010 Adhe Firmansyah Primary Author mixed material 9789792546330 Yogyakarta Garasi 2009