BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Lua Getsinger's Petition to the Sháh},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/louise-lua-aurora-getsinger/},
}

APA:
Bahá'í Chronicles editors. Lua Getsinger's Petition to the Sháh. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Lua Getsinger's Petition to the Sháh." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Lua Getsinger's Petition to the Sháh." In *Bahá'í Chronicles*, n.d..