BibTeX:
@incollection{Various,
  author = {Various},
  title = {The story of the Kitáb-i-Íqán (The Book of Certitude)},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2024/10/the-story-of-kitab-i-iqan-book-of.html},
}

APA:
Various. The story of the Kitáb-i-Íqán (The Book of Certitude). In *Baha'i Stories Blog*.

MLA:
Various. "The story of the Kitáb-i-Íqán (The Book of Certitude)." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "The story of the Kitáb-i-Íqán (The Book of Certitude)." In *Baha'i Stories Blog*, n.d..