Donoso Valdivieso, Marcelo, 		Aucancela Guamán, Margarita, 		Haro Sosa, Giovanny, AND 		Naranjo Vaca, Myriam.
" INFORMAL TRADE IN THE MARKETS MARIANO BORJA AND THE HOPE OF RIOBAMBA, A DESCRIPTIVE STUDY" <em>mktDESCUBRE</em> [Online], Volume 1 Number 2 (31 March 2020)