BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Faithful from Youth to Old Age},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/haji-aqay-i-tabrizi/},
}

APA:
Bahá'í Chronicles editors. Faithful from Youth to Old Age. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Faithful from Youth to Old Age." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Faithful from Youth to Old Age." In *Bahá'í Chronicles*, n.d..