BibTeX:
@incollection{Various,
  author = {Various},
  title = {Be Kind to Everyone},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/kindness},
}

APA:
Various. Be Kind to Everyone. In *bahaistories.com archive*.

MLA:
Various. "Be Kind to Everyone." *bahaistories.com archive*, n.d..

Chicago:
Various. "Be Kind to Everyone." In *bahaistories.com archive*, n.d..