BibTeX:
@incollection{Various,
  author = {Various},
  title = {Caring for the Sick},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/sick-caring},
}

APA:
Various. Caring for the Sick. In *bahaistories.com archive*.

MLA:
Various. "Caring for the Sick." *bahaistories.com archive*, n.d..

Chicago:
Various. "Caring for the Sick." In *bahaistories.com archive*, n.d..