BibTeX:
@incollection{NabliAzam1932,
  author = {Nabíl-i-A'zam},
  title = {The Shepherd of Zarand},
  booktitle = {The Dawn-Breakers: Nabíl's Narrative of the Early Days of the Bahá'í Revelation},
  year = {1932},
  publisher = {Bahá'í Publishing Trust},
}

APA:
Nabíl-i-A'zam. (1932). The Shepherd of Zarand. In *The Dawn-Breakers: Nabíl's Narrative of the Early Days of the Bahá'í Revelation*. Bahá'í Publishing Trust.

MLA:
Nabíl-i-A'zam. "The Shepherd of Zarand." *The Dawn-Breakers: Nabíl's Narrative of the Early Days of the Bahá'í Revelation*, Bahá'í Publishing Trust, 1932.

Chicago:
Nabíl-i-A'zam. "The Shepherd of Zarand." In *The Dawn-Breakers: Nabíl's Narrative of the Early Days of the Bahá'í Revelation*, Bahá'í Publishing Trust, 1932.