Granero, Ricardo, Esteban S. Poni, and Zoraida Sánchez. “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, no. 3 (June 8, 2009). Accessed December 20, 2025. https://prhsj.rcm.upr.edu/index.php/prhsj/article/view/240.