BibTeX:
@incollection{Various,
  author = {Various},
  title = {The Temple Is Already Built},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/corner-stone},
}

APA:
Various. The Temple Is Already Built. In *bahaistories.com archive*.

MLA:
Various. "The Temple Is Already Built." *bahaistories.com archive*, n.d..

Chicago:
Various. "The Temple Is Already Built." In *bahaistories.com archive*, n.d..