BibTeX:
@incollection{Various,
  author = {Various},
  title = {Abdu’l-Bahá relates a story as a metaphor},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2015/06/abdul-baha-relates-story-as-metaphor.html},
}

APA:
Various. Abdu’l-Bahá relates a story as a metaphor. In *Baha'i Stories Blog*.

MLA:
Various. "Abdu’l-Bahá relates a story as a metaphor." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "Abdu’l-Bahá relates a story as a metaphor." In *Baha'i Stories Blog*, n.d..