Dyfyniad APA

Herrera, J., Rodríguez, S., Rojas, J. F., Herrera, É., & Chaves, M. (2013). Temporal and spatial variation in the quality of surface water in the subwatershed of the Virilla river (Costa Rica) between 2006 and 2010.

Dyfyniad Arddull Chicago

Herrera, Jorge, Susana Rodríguez, José F. Rojas, Éricka Herrera, y María Chaves. Temporal and Spatial Variation in the Quality of Surface Water in the Subwatershed of the Virilla River (Costa Rica) between 2006 and 2010. 2013.

Dyfyniad MLA

Herrera, Jorge, et al. Temporal and Spatial Variation in the Quality of Surface Water in the Subwatershed of the Virilla River (Costa Rica) between 2006 and 2010. 2013.

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