@book{28256,
	author = {Betancourt Sánchez, Sandra Johana and Díaz Ladino, Diana Lorena},
	title = {Consumo de Sustancias Psicoactivas Lícitas en Estudiantes de Primer Semestre, Unillanos, Villavicencio, II PA, 2009 /},
	publisher = {Unillanos,},
	year = {2010.},
	address = {Villavicencio :}
}