2 1 10 Selamet Samsugi Primary Author Syaipul Ahdan Primary Author Jupriyadi Primary Author sampurna dadi riskiono Primary Author Arief Budiman Primary Author mixed material 9786235946030 Bandar Lamung Universitas Teknokrat Indonesia 2021 Akhmad Jayadi Additional Author Selamet Samsugi Primary Author Try Susanto Additional Author Jaka Persada Sembiring Additional Author mixed material 9786239859343 Bandar lampung Universitas Teknokrat Indonesia 2021