BibTeX:
@incollection{Various,
  author = {Various},
  title = {A lesson in forgiveness},
  booktitle = {Baha'i Stories for Children},
  url = {https://bahaistoriesforchildren.blogspot.com/2020/01/a-lesson-in-forgiveness.html},
}

APA:
Various. A lesson in forgiveness. In *Baha'i Stories for Children*.

MLA:
Various. "A lesson in forgiveness." *Baha'i Stories for Children*, n.d..

Chicago:
Various. "A lesson in forgiveness." In *Baha'i Stories for Children*, n.d..