BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Widow of the King of Martyrs},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/self-pity},
}

APA:
Various. The Widow of the King of Martyrs. In *bahaistories.com archive*.

MLA:
Various. "The Widow of the King of Martyrs." *bahaistories.com archive*, n.d..

Chicago:
Various. "The Widow of the King of Martyrs." In *bahaistories.com archive*, n.d..