putri, nadia benita (2022) “ANALISA PENGARUH PRODUCT, PRICE, PLACE, DAN PROMOTION TERHADAP KEPUTUSAN PEMBELIAN DI RUMAH MAKAN AYAM GORENG ECHO: The Effect of Product, Price, Place, and Promotion on Purchas Decision at ‘Ayam Goreng’ Echo Restaurant”., PERFORMA, 7(3), pp. 330–345. doi: 10.37715/jp.v7i3.2914.