BibTeX:
@incollection{Various,
  author = {Various},
  title = {Service to God, to Bahá’u’lláh, to family, to friends and enemies},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/service},
}

APA:
Various. Service to God, to Bahá’u’lláh, to family, to friends and enemies. In *bahaistories.com archive*.

MLA:
Various. "Service to God, to Bahá’u’lláh, to family, to friends and enemies." *bahaistories.com archive*, n.d..

Chicago:
Various. "Service to God, to Bahá’u’lláh, to family, to friends and enemies." In *bahaistories.com archive*, n.d..