Dyfyniad APA

Chinchilla, M., Alvarado, A., & Mata, R. (2010). Land capability for agricultural use in the middle-upper Pirrís River watershed, Los Santos, Costa Rica.

Dyfyniad Arddull Chicago

Chinchilla, Miguel, Alfredo Alvarado, y Rafael Mata. Land Capability for Agricultural Use in the Middle-upper Pirrís River Watershed, Los Santos, Costa Rica. 2010.

Dyfyniad MLA

Chinchilla, Miguel, Alfredo Alvarado, y Rafael Mata. Land Capability for Agricultural Use in the Middle-upper Pirrís River Watershed, Los Santos, Costa Rica. 2010.

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