BibTeX:
@incollection{Various,
  author = {Various},
  title = {Isfandiyar and the Knighthood},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/knighthood-abdul-baha},
}

APA:
Various. Isfandiyar and the Knighthood. In *bahaistories.com archive*.

MLA:
Various. "Isfandiyar and the Knighthood." *bahaistories.com archive*, n.d..

Chicago:
Various. "Isfandiyar and the Knighthood." In *bahaistories.com archive*, n.d..