एपीए उद्धरण

Barquero, R., Rojas, W., & Vargas, A. (2011). Summary of the seismic and volcanic activity in Costa Rica during 2011.

शिकागो स्टाइल उद्धरण

Barquero, Rafael, Wilfredo Rojas, और Alberto Vargas. Summary of the Seismic and Volcanic Activity in Costa Rica During 2011. 2011.

एमएलए उद्धरण

Barquero, Rafael, Wilfredo Rojas, और Alberto Vargas. Summary of the Seismic and Volcanic Activity in Costa Rica During 2011. 2011.