BibTeX:
@incollection{Various,
  author = {Various},
  title = {Although Shoghi Effendi was extremely busy during this vacation and},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/exercise},
}

APA:
Various. Although Shoghi Effendi was extremely busy during this vacation and. In *bahaistories.com archive*.

MLA:
Various. "Although Shoghi Effendi was extremely busy during this vacation and." *bahaistories.com archive*, n.d..

Chicago:
Various. "Although Shoghi Effendi was extremely busy during this vacation and." In *bahaistories.com archive*, n.d..