BibTeX:
@incollection{BahWorldCentrecompilation,
  author = {Bahá'í World Centre (compilation)},
  title = {The House at the Foot of the Mountain},
  booktitle = {Bahíyyih Khánum, the Greatest Holy Leaf},
}

APA:
Bahá'í World Centre (compilation). The House at the Foot of the Mountain. In *Bahíyyih Khánum, the Greatest Holy Leaf*.

MLA:
Bahá'í World Centre (compilation). "The House at the Foot of the Mountain." *Bahíyyih Khánum, the Greatest Holy Leaf*, n.d..

Chicago:
Bahá'í World Centre (compilation). "The House at the Foot of the Mountain." In *Bahíyyih Khánum, the Greatest Holy Leaf*, n.d..