BibTeX:
@incollection{Various,
  author = {Various},
  title = {On hearing him [‘Abdu’l-Bahá], two things amazed us},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/anger},
}

APA:
Various. On hearing him [‘Abdu’l-Bahá], two things amazed us. In *bahaistories.com archive*.

MLA:
Various. "On hearing him [‘Abdu’l-Bahá], two things amazed us." *bahaistories.com archive*, n.d..

Chicago:
Various. "On hearing him [‘Abdu’l-Bahá], two things amazed us." In *bahaistories.com archive*, n.d..