BibTeX:
@incollection{Various,
  author = {Various},
  title = {Doubts Dispelled by a Dream},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/doubts},
}

APA:
Various. Doubts Dispelled by a Dream. In *bahaistories.com archive*.

MLA:
Various. "Doubts Dispelled by a Dream." *bahaistories.com archive*, n.d..

Chicago:
Various. "Doubts Dispelled by a Dream." In *bahaistories.com archive*, n.d..