BibTeX:
@incollection{Various,
  author = {Various},
  title = {Bahá’u’lláh’s marriage to Ásíyih Khánúm and their early lives together up until His…},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2013/12/bahaullahs-marriage-to-asiyih-khanum.html},
}

APA:
Various. Bahá’u’lláh’s marriage to Ásíyih Khánúm and their early lives together up until His…. In *Baha'i Stories Blog*.

MLA:
Various. "Bahá’u’lláh’s marriage to Ásíyih Khánúm and their early lives together up until His…." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "Bahá’u’lláh’s marriage to Ásíyih Khánúm and their early lives together up until His…." In *Baha'i Stories Blog*, n.d..