BibTeX:
@incollection{StaroftheWestEditors1911,
  author = {Star of the West Editors},
  title = {Louis Gregory's Four Days in London},
  booktitle = {Star of the West},
  year = {1911},
  publisher = {Bahai News Service},
  url = {https://bahai.works/Star_of_the_West/Volume_2/Issue_5/Text},
}

APA:
Star of the West Editors. (1911). Louis Gregory's Four Days in London. In *Star of the West*. Bahai News Service.

MLA:
Star of the West Editors. "Louis Gregory's Four Days in London." *Star of the West*, Bahai News Service, 1911.

Chicago:
Star of the West Editors. "Louis Gregory's Four Days in London." In *Star of the West*, Bahai News Service, 1911.