BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {The Forty Mornings of Mirza Yusuf},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/mirza-yusuf-vahid-kashfi/},
}

APA:
Bahá'í Chronicles editors. The Forty Mornings of Mirza Yusuf. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "The Forty Mornings of Mirza Yusuf." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "The Forty Mornings of Mirza Yusuf." In *Bahá'í Chronicles*, n.d..