Vallejos Barra, O. (1996). Productivity and relationships of the index of site with fisiographics, edafoclimatic and foliar variable for Tectona grandis L.F., Bombacopsis quinatum (Jacq.) Dugand and Gmelina arborea Roxb. in Costa Rica.
استشهاد بنمط شيكاغوVallejos Barra, O.S. Productivity and Relationships of the Index of Site With Fisiographics, Edafoclimatic and Foliar Variable for Tectona Grandis L.F., Bombacopsis Quinatum (Jacq.) Dugand and Gmelina Arborea Roxb. in Costa Rica. 1996.
MLA استشهادVallejos Barra, O.S. Productivity and Relationships of the Index of Site With Fisiographics, Edafoclimatic and Foliar Variable for Tectona Grandis L.F., Bombacopsis Quinatum (Jacq.) Dugand and Gmelina Arborea Roxb. in Costa Rica. 1996.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.