Citations refer to the original publication, not to a Scieee localized version.
Ramírez de León, J. A., Gómez Ayala, R. C., Jacques Hernández, C., & Vázquez Vázquez, M. (2006). Evaluation of treatments to reduce hardness of agave americana core. University of Zagreb. https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41
Ramírez de León, José Alberto, et al. Evaluation of treatments to reduce hardness of agave americana core. University of Zagreb, 2006. https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41.
Ramírez de León, José Alberto, Rocío C. Gómez Ayala, Cuauhtémoc Jacques Hernández, and Manuel Vázquez Vázquez. Evaluation of treatments to reduce hardness of agave americana core. University of Zagreb, 2006. https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41.
Ramírez de León, J. A. et al. (2006) Evaluation of treatments to reduce hardness of agave americana core. University of Zagreb. Available at: https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41.
J. A. Ramírez de León, R. C. Gómez Ayala, C. Jacques Hernández, and M. Vázquez Vázquez, “Evaluation of treatments to reduce hardness of agave americana core,” University of Zagreb, 2006. [Online]. Available: https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41
@misc{ramirezdeleon2006evaluation,
author = {Ramírez de León, José Alberto and Gómez Ayala, Rocío C. and Jacques Hernández, Cuauhtémoc and Vázquez Vázquez, Manuel},
title = {Evaluation of treatments to reduce hardness of agave americana core},
year = {2006},
publisher = {University of Zagreb},
url = {https://minerva.usc.es/entities/publication/c44106a6-5c73-43ef-a763-e729a9dc2f41}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.