BibTeX:
@incollection{AdibTaherzadeh1977,
  author = {Adib Taherzadeh},
  title = {Khadíjih Bagum Remembers the Báb},
  booktitle = {The Revelation of Bahá'u'lláh, Volume 2},
  year = {1977},
  publisher = {George Ronald},
}

APA:
Adib Taherzadeh. (1977). Khadíjih Bagum Remembers the Báb. In *The Revelation of Bahá'u'lláh, Volume 2*. George Ronald.

MLA:
Adib Taherzadeh. "Khadíjih Bagum Remembers the Báb." *The Revelation of Bahá'u'lláh, Volume 2*, George Ronald, 1977.

Chicago:
Adib Taherzadeh. "Khadíjih Bagum Remembers the Báb." In *The Revelation of Bahá'u'lláh, Volume 2*, George Ronald, 1977.