Azzahra, Zuhairini, Suyono Suyono, and Ria Arafiyah. 2017. “Analisis Model Intervensi Fungsi Step Terhadap Indeks Harga Konsumen (IHK)”. Jurnal Statistika Dan Aplikasinya 1 (1):13-22. https://doi.org/10.21009/JSA.01102.