Citations refer to the original publication, not to a Scieee localized version.
Romero, M. R., & Torres Rueda, A. I. (1993). Cortical development associated with conjugation of Paramecium. Company of Biologists Ltd. https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89
Romero, Maria Rosario, and Antonio Ildefonso Torres Rueda. Cortical development associated with conjugation of Paramecium. Company of Biologists Ltd, 1993. https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89.
Romero, Maria Rosario, and Antonio Ildefonso Torres Rueda. Cortical development associated with conjugation of Paramecium. Company of Biologists Ltd, 1993. https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89.
Romero, M. R. and Torres Rueda, A. I. (1993) Cortical development associated with conjugation of Paramecium. Company of Biologists Ltd. Available at: https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89.
M. R. Romero and A. I. Torres Rueda, “Cortical development associated with conjugation of Paramecium,” Company of Biologists Ltd, 1993. [Online]. Available: https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89
@misc{romero1993cortical,
author = {Romero, Maria Rosario and Torres Rueda, Antonio Ildefonso},
title = {Cortical development associated with conjugation of Paramecium},
year = {1993},
publisher = {Company of Biologists Ltd},
url = {https://idus.us.es/items/cd14ad1a-5c88-46ee-9c3a-9959e9cbcb89}
}
The source metadata has no journal, volume or pages. Add them from the original publication if your citation needs them.