BibTeX:
@incollection{Various,
  author = {Various},
  title = {One well-known story involves teaching Mountfort Mills how to pray},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/prayer},
}

APA:
Various. One well-known story involves teaching Mountfort Mills how to pray. In *bahaistories.com archive*.

MLA:
Various. "One well-known story involves teaching Mountfort Mills how to pray." *bahaistories.com archive*, n.d..

Chicago:
Various. "One well-known story involves teaching Mountfort Mills how to pray." In *bahaistories.com archive*, n.d..