BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Áqá Muḥammad-Ibráhím Amír},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/aqa-mu%e1%b8%a5ammad-ibrahim-amir/},
}

APA:
Bahá'í Chronicles editors. Áqá Muḥammad-Ibráhím Amír. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Áqá Muḥammad-Ibráhím Amír." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Áqá Muḥammad-Ibráhím Amír." In *Bahá'í Chronicles*, n.d..