BibTeX:
@incollection{StaroftheWestEditors1910,
  author = {Star of the West Editors},
  title = {The Purest Branch: A Memorial in the First Issue of the Star of the West},
  booktitle = {Star of the West},
  year = {1910},
  publisher = {Bahai News Service},
  url = {https://bahai-library.com/star_of_the_west_volume_1},
}

APA:
Star of the West Editors. (1910). The Purest Branch: A Memorial in the First Issue of the Star of the West. In *Star of the West*. Bahai News Service.

MLA:
Star of the West Editors. "The Purest Branch: A Memorial in the First Issue of the Star of the West." *Star of the West*, Bahai News Service, 1910.

Chicago:
Star of the West Editors. "The Purest Branch: A Memorial in the First Issue of the Star of the West." In *Star of the West*, Bahai News Service, 1910.