BibTeX:
@incollection{Various,
  author = {Various},
  title = {Tuba Khánum:   When my little sister, Ruh-AngiAsiyih, arrived, there},
  booktitle = {bahaistories.com archive},
  url = {https://bahaistories.com/subject/death-wanting-die},
}

APA:
Various. Tuba Khánum:   When my little sister, Ruh-AngiAsiyih, arrived, there. In *bahaistories.com archive*.

MLA:
Various. "Tuba Khánum:   When my little sister, Ruh-AngiAsiyih, arrived, there." *bahaistories.com archive*, n.d..

Chicago:
Various. "Tuba Khánum:   When my little sister, Ruh-AngiAsiyih, arrived, there." In *bahaistories.com archive*, n.d..