BibTeX:
@incollection{Various,
  author = {Various},
  title = {A Few Days' Rest in Paris},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/exhaustion},
}

APA:
Various. A Few Days' Rest in Paris. In *bahaistories.com archive*.

MLA:
Various. "A Few Days' Rest in Paris." *bahaistories.com archive*, n.d..

Chicago:
Various. "A Few Days' Rest in Paris." In *bahaistories.com archive*, n.d..