BibTeX:
@incollection{AdibTaherzadeh1974,
  author = {Adib Taherzadeh},
  title = {A Scattered Flock Made Whole: Bahá'u'lláh in Baghdád},
  booktitle = {The Revelation of Bahá'u'lláh, Volume 1},
  year = {1974},
  publisher = {George Ronald},
}

APA:
Adib Taherzadeh. (1974). A Scattered Flock Made Whole: Bahá'u'lláh in Baghdád. In *The Revelation of Bahá'u'lláh, Volume 1*. George Ronald.

MLA:
Adib Taherzadeh. "A Scattered Flock Made Whole: Bahá'u'lláh in Baghdád." *The Revelation of Bahá'u'lláh, Volume 1*, George Ronald, 1974.

Chicago:
Adib Taherzadeh. "A Scattered Flock Made Whole: Bahá'u'lláh in Baghdád." In *The Revelation of Bahá'u'lláh, Volume 1*, George Ronald, 1974.