BibTeX:
@incollection{Various,
  author = {Various},
  title = {May Maxwell, the mother of Rúhíyyih Khánum, died only a few weeks},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/martyrs},
}

APA:
Various. May Maxwell, the mother of Rúhíyyih Khánum, died only a few weeks. In *bahaistories.com archive*.

MLA:
Various. "May Maxwell, the mother of Rúhíyyih Khánum, died only a few weeks." *bahaistories.com archive*, n.d..

Chicago:
Various. "May Maxwell, the mother of Rúhíyyih Khánum, died only a few weeks." In *bahaistories.com archive*, n.d..