BibTeX:
@incollection{Various,
  author = {Various},
  title = {1848: Baha’u’llah describes the consternation that seized the Bábís when Tahirih suddenly…},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2017/07/1848-bahaullah-describes-consternation.html},
}

APA:
Various. 1848: Baha’u’llah describes the consternation that seized the Bábís when Tahirih suddenly…. In *Baha'i Stories Blog*.

MLA:
Various. "1848: Baha’u’llah describes the consternation that seized the Bábís when Tahirih suddenly…." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "1848: Baha’u’llah describes the consternation that seized the Bábís when Tahirih suddenly…." In *Baha'i Stories Blog*, n.d..