<https://blog.ganipramudyo.web.id/2024/05/cara-menentukan-harga-jual-atk.html>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.ganipramudyo.web.id/2024/05/cara-menentukan-harga-jual-atk.html>