Susana, Fera, 		Julianto, Didik, AND 		Suhartono, Suhartono.
" The Influence of Price and Promotion on Consumer Purchase Decisions at Sumber Makmur Kopi Jember" <em>Electronical Journal of Social and Political Sciences (E-SOSPOL)</em> [Online], Volume 10 Number 1 (9 June 2023)