Villalobos, L., & Sánchez, J. M. (2009). Agronomic and nutritional evaluation of perennial tetraploid ryegrass-based pas-tures (Lolium perenne) in dairy farms in the highlands of Costa Rica. I. Dry matter yield and phenology.
Chicago-tyylinen lähdeviittausVillalobos, Luis, ja Jorge Ml Sánchez. Agronomic and Nutritional Evaluation of Perennial Tetraploid Ryegrass-based Pas-tures (Lolium Perenne) in Dairy Farms in the Highlands of Costa Rica. I. Dry Matter Yield and Phenology. 2009.
MLA-viiteVillalobos, Luis, ja Jorge Ml Sánchez. Agronomic and Nutritional Evaluation of Perennial Tetraploid Ryegrass-based Pas-tures (Lolium Perenne) in Dairy Farms in the Highlands of Costa Rica. I. Dry Matter Yield and Phenology. 2009.
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