BibTeX:
@incollection{Various,
  author = {Various},
  title = {I asked ‘Abdu’l-Bahá one day: "Why should I believe in Bahá’u’lláh?"  He looked},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/silence},
}

APA:
Various. I asked ‘Abdu’l-Bahá one day: "Why should I believe in Bahá’u’lláh?"  He looked. In *bahaistories.com archive*.

MLA:
Various. "I asked ‘Abdu’l-Bahá one day: "Why should I believe in Bahá’u’lláh?"  He looked." *bahaistories.com archive*, n.d..

Chicago:
Various. "I asked ‘Abdu’l-Bahá one day: "Why should I believe in Bahá’u’lláh?"  He looked." In *bahaistories.com archive*, n.d..