Rahayu, Indah Suci. “Plumbing Work in Green Market Based on Value Engineering”. Jurnal KaLIBRASI - Karya Lintas Ilmu Bidang Rekayasa Arsitektur, Sipil, Industri 6, no. 1 (March 31, 2023): 22–29. Accessed April 19, 2024. https://ejournal.borobudur.ac.id/index.php/teknik/article/view/1122.