BibTeX:
@incollection{Various,
  author = {Various},
  title = {Strive day and night to attain to this exalted state},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/peacefulness},
}

APA:
Various. Strive day and night to attain to this exalted state. In *bahaistories.com archive*.

MLA:
Various. "Strive day and night to attain to this exalted state." *bahaistories.com archive*, n.d..

Chicago:
Various. "Strive day and night to attain to this exalted state." In *bahaistories.com archive*, n.d..