Granero, Ricardo, Esteban S. Poni, and Zoraida Sánchez. 2009. “Sexuality Among 7th, 8th and 9th Grade Students in the State of Lara, Venezuela. The Global School Health Survey, 2003-2004”. Puerto Rico Health Sciences Journal 26 (3). https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/240.