BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Nabíl of Qá’in},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/nabil-of-qain/},
}

APA:
Bahá'í Chronicles editors. Nabíl of Qá’in. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Nabíl of Qá’in." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Nabíl of Qá’in." In *Bahá'í Chronicles*, n.d..