BibTeX:
@incollection{Various,
  author = {Various},
  title = {Four days before the caravan was to set out, the Blessed Perfection},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/ridvan-ninth-day},
}

APA:
Various. Four days before the caravan was to set out, the Blessed Perfection. In *bahaistories.com archive*.

MLA:
Various. "Four days before the caravan was to set out, the Blessed Perfection." *bahaistories.com archive*, n.d..

Chicago:
Various. "Four days before the caravan was to set out, the Blessed Perfection." In *bahaistories.com archive*, n.d..