BibTeX:
@incollection{Various,
  author = {Various},
  title = {An example of the effect of Baha’u’llah’s Teachings on early believers},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2015/03/an-example-of-effect-of-bahaullahs.html},
}

APA:
Various. An example of the effect of Baha’u’llah’s Teachings on early believers. In *Baha'i Stories Blog*.

MLA:
Various. "An example of the effect of Baha’u’llah’s Teachings on early believers." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "An example of the effect of Baha’u’llah’s Teachings on early believers." In *Baha'i Stories Blog*, n.d..