BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Thornton Chase, the First American Believer},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/thornton-chase-disciple-of-abdul-baha/},
}

APA:
Bahá'í Chronicles editors. Thornton Chase, the First American Believer. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Thornton Chase, the First American Believer." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Thornton Chase, the First American Believer." In *Bahá'í Chronicles*, n.d..