BibTeX:
@incollection{Various,
  author = {Various},
  title = {A Bitter-Sweet Experience},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/humility},
}

APA:
Various. A Bitter-Sweet Experience. In *bahaistories.com archive*.

MLA:
Various. "A Bitter-Sweet Experience." *bahaistories.com archive*, n.d..

Chicago:
Various. "A Bitter-Sweet Experience." In *bahaistories.com archive*, n.d..