Jamal, Sutan, Edy Prasetyo, & Kustopo Budiharjo. " KESEDIAAN MEMBAYAR (WILLINGNESS TO PAY) TERHADAP PRODUK COFFEE LATTE DI KOTA SEMARANG." JSEP (Journal of Social and Agricultural Economics) [Online], 13.3 (2020): 264-272. Web. 29 Jan. 2023