BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Master and the Stray Puppy},
  booktitle = {Baha'i Stories for Children},
  url = {https://bahaistoriesforchildren.blogspot.com/},
}

APA:
Various. The Master and the Stray Puppy. In *Baha'i Stories for Children*.

MLA:
Various. "The Master and the Stray Puppy." *Baha'i Stories for Children*, n.d..

Chicago:
Various. "The Master and the Stray Puppy." In *Baha'i Stories for Children*, n.d..