BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Stone the Builder Rejected},
  booktitle = {Baha'i Stories for Children},
  url = {https://bahaistoriesforchildren.blogspot.com/2023/02/chicago-temple-stone-that-was-rejected.html},
}

APA:
Various. The Stone the Builder Rejected. In *Baha'i Stories for Children*.

MLA:
Various. "The Stone the Builder Rejected." *Baha'i Stories for Children*, n.d..

Chicago:
Various. "The Stone the Builder Rejected." In *Baha'i Stories for Children*, n.d..