BibTeX:
@incollection{BahChronicleseditors,
  author = {Bahá'í Chronicles editors},
  title = {Ustad ‘Abdu’l-Karim},
  booktitle = {Bahá'í Chronicles},
  url = {https://bahaichronicles.org/ustad-abdu-karim-neda-need-more-content/},
}

APA:
Bahá'í Chronicles editors. Ustad ‘Abdu’l-Karim. In *Bahá'í Chronicles*.

MLA:
Bahá'í Chronicles editors. "Ustad ‘Abdu’l-Karim." *Bahá'í Chronicles*, n.d..

Chicago:
Bahá'í Chronicles editors. "Ustad ‘Abdu’l-Karim." In *Bahá'í Chronicles*, n.d..