BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Master with the Sick Pilgrim},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/},
}

APA:
Various. The Master with the Sick Pilgrim. In *bahaistories.com archive*.

MLA:
Various. "The Master with the Sick Pilgrim." *bahaistories.com archive*, n.d..

Chicago:
Various. "The Master with the Sick Pilgrim." In *bahaistories.com archive*, n.d..