BibTeX:
@incollection{Various,
  author = {Various},
  title = {Ḥájí Amín, Trustee of Ḥuqúqu'lláh},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/detachment},
}

APA:
Various. Ḥájí Amín, Trustee of Ḥuqúqu'lláh. In *bahaistories.com archive*.

MLA:
Various. "Ḥájí Amín, Trustee of Ḥuqúqu'lláh." *bahaistories.com archive*, n.d..

Chicago:
Various. "Ḥájí Amín, Trustee of Ḥuqúqu'lláh." In *bahaistories.com archive*, n.d..