Citations refer to the original publication, not to a Scieee localized version.
Castro Camero, R. D. (1994). Regula Iuris. Pontificia Universidad Católica de Valparaíso. https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0
Castro Camero, Rosario de. Regula Iuris. Pontificia Universidad Católica de Valparaíso, 1994. https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0.
Castro Camero, Rosario de. Regula Iuris. Pontificia Universidad Católica de Valparaíso, 1994. https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0.
Castro Camero, R. D. (1994) Regula Iuris. Pontificia Universidad Católica de Valparaíso. Available at: https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0.
R. D. Castro Camero, “Regula Iuris,” Pontificia Universidad Católica de Valparaíso, 1994. [Online]. Available: https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0
@misc{castrocamero1994regula,
author = {Castro Camero, Rosario de},
title = {Regula Iuris},
year = {1994},
publisher = {Pontificia Universidad Católica de Valparaíso},
url = {https://idus.us.es/items/0a778f15-a77c-4dc2-90a1-6542167c39f0}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.