BibTeX:
@incollection{Various,
  author = {Various},
  title = {Ṭáhirih's Rescue from Qazvín},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2017/05/the-story-of-tahirihs-house-arrest-and.html},
}

APA:
Various. Ṭáhirih's Rescue from Qazvín. In *Baha'i Stories Blog*.

MLA:
Various. "Ṭáhirih's Rescue from Qazvín." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "Ṭáhirih's Rescue from Qazvín." In *Baha'i Stories Blog*, n.d..