BibTeX:
@incollection{Various,
  author = {Various},
  title = {I was asked to say a few words to the dear South African believers who are here\_today},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/unity},
}

APA:
Various. I was asked to say a few words to the dear South African believers who are here\_today. In *bahaistories.com archive*.

MLA:
Various. "I was asked to say a few words to the dear South African believers who are here\_today." *bahaistories.com archive*, n.d..

Chicago:
Various. "I was asked to say a few words to the dear South African believers who are here\_today." In *bahaistories.com archive*, n.d..