BibTeX:
@incollection{Various,
  author = {Various},
  title = {Sutherland, although greatly involved in the Maxwell brothers},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/abdul-baha-montreal},
}

APA:
Various. Sutherland, although greatly involved in the Maxwell brothers. In *bahaistories.com archive*.

MLA:
Various. "Sutherland, although greatly involved in the Maxwell brothers." *bahaistories.com archive*, n.d..

Chicago:
Various. "Sutherland, although greatly involved in the Maxwell brothers." In *bahaistories.com archive*, n.d..