CALDERÓN ZAMORA, Marjorie Jesenia; 						ALONSO BETANCOURT, Luis Anibal; 						CEDEÑO MEJÍA, Juan Francisco.
La The Problemic Teaching in the Initial Training of the Engineer in Foreign Trade.
<strong>LUZ</strong>, [S.l.], v. 17, n. 4, p. 3-14, oct. 2018.
ISSN 1814-151X.
Available at: &lt;<a href="https://luz.uho.edu.cu/index.php/luz/article/view/932" target="_new">https://luz.uho.edu.cu/index.php/luz/article/view/932</a>&gt;. Date accessed: 03 dec. 2019.