APA-viite

Villalobos, L., Arce, J., & WingChing-Jones, R. (2013). Dry matter yield and production costs in grazing systems on dairy farms of Costa Rica.

Chicago-tyylinen lähdeviittaus

Villalobos, Luis, Jose Arce, ja Rodolfo WingChing-Jones. Dry Matter Yield and Production Costs in Grazing Systems On Dairy Farms of Costa Rica. 2013.

MLA-viite

Villalobos, Luis, Jose Arce, ja Rodolfo WingChing-Jones. Dry Matter Yield and Production Costs in Grazing Systems On Dairy Farms of Costa Rica. 2013.

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