BibTeX:
@incollection{Various,
  author = {Various},
  title = {Glimpses of the Báb},
  booktitle = {Baha'i Stories for Children},
  url = {https://bahaistoriesforchildren.blogspot.com/2016/07/glimpses-of-bab.html},
}

APA:
Various. Glimpses of the Báb. In *Baha'i Stories for Children*.

MLA:
Various. "Glimpses of the Báb." *Baha'i Stories for Children*, n.d..

Chicago:
Various. "Glimpses of the Báb." In *Baha'i Stories for Children*, n.d..