BibTeX:
@incollection{Various,
  author = {Various},
  title = {From Famine Relief to Knighthood},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/knighthood-abdul-baha},
}

APA:
Various. From Famine Relief to Knighthood. In *bahaistories.com archive*.

MLA:
Various. "From Famine Relief to Knighthood." *bahaistories.com archive*, n.d..

Chicago:
Various. "From Famine Relief to Knighthood." In *bahaistories.com archive*, n.d..