BibTeX:
@incollection{RyyihKhnum,
  author = {Rúḥíyyih Khánum},
  title = {Exactly What He Owed},
  booktitle = {The Priceless Pearl},
}

APA:
Rúḥíyyih Khánum. Exactly What He Owed. In *The Priceless Pearl*.

MLA:
Rúḥíyyih Khánum. "Exactly What He Owed." *The Priceless Pearl*, n.d..

Chicago:
Rúḥíyyih Khánum. "Exactly What He Owed." In *The Priceless Pearl*, n.d..