Delgado Fernández, Luis, Ana Trocones Boggiano, y Claribel Suárez Pérez. 2018. «Agronomic Performance of Three Sunflower Varieties (Helianthus Annuus L.) in Topes De Collantes Mountain Community, Cub»a. Agrisost 24 (3), 176-86. https://revistas.reduc.edu.cu/index.php/agrisost/article/view/2712.