Hidayah, Irwin, Bambang Kuswandi, & Lestyo Wulandari. " Deteksi Kemurnian Air Zamzam Menggunakan Metode Spektrofotometri Near Infra Red (NIR) dan Kemometrik (Detection of Zamzam Water Purity Using Near Infra Red Spectroscopy (NIR) and Chemometrics)." Pustaka Kesehatan [Online], 2.3 (2014): 439-444. Web. 13 Nov. 2024