Dyfyniad APA

Zúñiga Arias, A. Y., & Ledezma Díaz, R. Á. (2015). Natural hazards in Costa Rica: An approach from Social Studies and Civic Education.

Dyfyniad Arddull Chicago

Zúñiga Arias, Ana Yolanda, y Rafael Ángel Ledezma Díaz. Natural Hazards in Costa Rica: An Approach From Social Studies and Civic Education. 2015.

Dyfyniad MLA

Zúñiga Arias, Ana Yolanda, y Rafael Ángel Ledezma Díaz. Natural Hazards in Costa Rica: An Approach From Social Studies and Civic Education. 2015.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.