BibTeX:
@incollection{Various,
  author = {Various},
  title = {While ‘Abdu’l-Bahá was living in a Paris hotel, among those who often},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/race-unity},
}

APA:
Various. While ‘Abdu’l-Bahá was living in a Paris hotel, among those who often. In *bahaistories.com archive*.

MLA:
Various. "While ‘Abdu’l-Bahá was living in a Paris hotel, among those who often." *bahaistories.com archive*, n.d..

Chicago:
Various. "While ‘Abdu’l-Bahá was living in a Paris hotel, among those who often." In *bahaistories.com archive*, n.d..