Dyfyniad APA

Chinchilla, M., Mata, R., & Alvarado, A. (2010). Characterization and classification of Ultisols of Los Santos, Talamanca, Costa Rica.

Dyfyniad Arddull Chicago

Chinchilla, Miguel, Rafael Mata, y Alfredo Alvarado. Characterization and Classification of Ultisols of Los Santos, Talamanca, Costa Rica. 2010.

Dyfyniad MLA

Chinchilla, Miguel, Rafael Mata, y Alfredo Alvarado. Characterization and Classification of Ultisols of Los Santos, Talamanca, Costa Rica. 2010.

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