BibTeX:
@incollection{RyyihKhnum1969,
  author = {Rúḥíyyih Khánum},
  title = {Hour After Hour in the Master's House},
  booktitle = {The Priceless Pearl},
  year = {1969},
}

APA:
Rúḥíyyih Khánum. (1969). Hour After Hour in the Master's House. In *The Priceless Pearl*.

MLA:
Rúḥíyyih Khánum. "Hour After Hour in the Master's House." *The Priceless Pearl*, 1969.

Chicago:
Rúḥíyyih Khánum. "Hour After Hour in the Master's House." In *The Priceless Pearl*, 1969.