Citations refer to the original publication, not to a Scieee localized version.
Brullo, S., Minissale, P., & Spampinato, G. (1997). Arrhenatherum nebrodense, a new species from Sicily. Universidad de Sevilla. https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014
Brullo, Salvatore, et al. Arrhenatherum nebrodense, a new species from Sicily. Universidad de Sevilla, 1997. https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014.
Brullo, Salvatore, Pietro Minissale, and Giovanni Spampinato. Arrhenatherum nebrodense, a new species from Sicily. Universidad de Sevilla, 1997. https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014.
Brullo, S., Minissale, P. and Spampinato, G. (1997) Arrhenatherum nebrodense, a new species from Sicily. Universidad de Sevilla. Available at: https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014.
S. Brullo, P. Minissale, and G. Spampinato, “Arrhenatherum nebrodense, a new species from Sicily,” Universidad de Sevilla, 1997. [Online]. Available: https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014
@misc{brullo1997arrhenatherum,
author = {Brullo, Salvatore and Minissale, Pietro and Spampinato, Giovanni},
title = {Arrhenatherum nebrodense, a new species from Sicily},
year = {1997},
publisher = {Universidad de Sevilla},
url = {https://idus.us.es/items/0bef1def-7e62-463d-94ee-f2ecb5807014}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.