Purwati Purwati
(1), Agung Yuliyanto Nugroho
(2), Hamka Hamka
(3), Hendro Sukoco
(4)
(1)
Politeknik Negeri Sriwijaya, Indonesia,
(2)
Universitas Cendekia Mitra Indonesia, Indonesia,
(3)
Universitas Lambung Mangkurat, Indonesia,
(4)
Universitas Nahdlatul Ulama Purwokerto, Indonesia
