BibTeX:
@incollection{Various,
  author = {Various},
  title = {On one occasion two young boys, Shoghi Effendi and his first cousin},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/happiness},
}

APA:
Various. On one occasion two young boys, Shoghi Effendi and his first cousin. In *bahaistories.com archive*.

MLA:
Various. "On one occasion two young boys, Shoghi Effendi and his first cousin." *bahaistories.com archive*, n.d..

Chicago:
Various. "On one occasion two young boys, Shoghi Effendi and his first cousin." In *bahaistories.com archive*, n.d..