BibTeX:
@incollection{Various,
  author = {Various},
  title = {A Late Visit to the Library of Congress},
  booktitle = {Baha'i Stories Blog},
  url = {https://bahaistories.blogspot.com/2013/11/visiting-library-of-congress-in.html},
}

APA:
Various. A Late Visit to the Library of Congress. In *Baha'i Stories Blog*.

MLA:
Various. "A Late Visit to the Library of Congress." *Baha'i Stories Blog*, n.d..

Chicago:
Various. "A Late Visit to the Library of Congress." In *Baha'i Stories Blog*, n.d..