BibTeX:
@incollection{Various,
  author = {Various},
  title = {Sarah Farmer and Green Acre},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/green-acre},
}

APA:
Various. Sarah Farmer and Green Acre. In *bahaistories.com archive*.

MLA:
Various. "Sarah Farmer and Green Acre." *bahaistories.com archive*, n.d..

Chicago:
Various. "Sarah Farmer and Green Acre." In *bahaistories.com archive*, n.d..