BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {A Servant of Bahá'u'lláh from Youth},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/%e1%b8%a5aji-farajullah-tafrishi/},
}

APA:
Bahá'í Chronicles editors. A Servant of Bahá'u'lláh from Youth. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "A Servant of Bahá'u'lláh from Youth." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "A Servant of Bahá'u'lláh from Youth." In *Bahá'í Chronicles*, n.d..