BibTeX:
@incollection{Various,
  author = {Various},
  title = {I myself was in prison forty years -- one year alone would have been impossible},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/joy},
}

APA:
Various. I myself was in prison forty years -- one year alone would have been impossible. In *bahaistories.com archive*.

MLA:
Various. "I myself was in prison forty years -- one year alone would have been impossible." *bahaistories.com archive*, n.d..

Chicago:
Various. "I myself was in prison forty years -- one year alone would have been impossible." In *bahaistories.com archive*, n.d..