BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Master at the Waterfall},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/beauty},
}

APA:
Various. The Master at the Waterfall. In *bahaistories.com archive*.

MLA:
Various. "The Master at the Waterfall." *bahaistories.com archive*, n.d..

Chicago:
Various. "The Master at the Waterfall." In *bahaistories.com archive*, n.d..