BibTeX:
@incollection{Various,
  author = {Various},
  title = {Giving one’s material possessions for the sake of God},
  booktitle = {Baha'i Stories for Children},
  url = {https://bahaistoriesforchildren.blogspot.com/2018/02/giving-ones-material-possessions-for.html},
}

APA:
Various. Giving one’s material possessions for the sake of God. In *Baha'i Stories for Children*.

MLA:
Various. "Giving one’s material possessions for the sake of God." *Baha'i Stories for Children*, n.d..

Chicago:
Various. "Giving one’s material possessions for the sake of God." In *Baha'i Stories for Children*, n.d..