Barquero, R., Rojas, W., & Vargas, A. (2011). Summary of the seismic and volcanic activity in Costa Rica during 2011.
استشهاد بنمط شيكاغوBarquero, Rafael, Wilfredo Rojas, و Alberto Vargas. Summary of the Seismic and Volcanic Activity in Costa Rica During 2011. 2011.
MLA استشهادBarquero, Rafael, Wilfredo Rojas, و Alberto Vargas. Summary of the Seismic and Volcanic Activity in Costa Rica During 2011. 2011.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.