BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {The First Bahá'ís of South Africa},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/},
}

APA:
Bahá'í Chronicles editors. The First Bahá'ís of South Africa. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "The First Bahá'ís of South Africa." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "The First Bahá'ís of South Africa." In *Bahá'í Chronicles*, n.d..