Apunte-Zambrano, Roberto, 		Jaraiseh-Abcarius, Joline, AND 		Pereira-Ordóñez, Sebastián.
" The increase of vat and the impact on the consumption of the commercial sector of the metropolitan district of Quito in 2016 – 2017 period" <em>mktDESCUBRE</em> [Online], Volume 1 Number 11 (11 June 2018)