BibTeX:
@incollection{AdibTaherzadeh1977,
  author = {Adib Taherzadeh},
  title = {The Limb of the Law of God: The Tablet of the Branch},
  booktitle = {The Revelation of Bahá'u'lláh (Vol. 2 — Adrianople 1863-68)},
  year = {1977},
  publisher = {George Ronald},
}

APA:
Adib Taherzadeh. (1977). The Limb of the Law of God: The Tablet of the Branch. In *The Revelation of Bahá'u'lláh (Vol. 2 — Adrianople 1863-68)*. George Ronald.

MLA:
Adib Taherzadeh. "The Limb of the Law of God: The Tablet of the Branch." *The Revelation of Bahá'u'lláh (Vol. 2 — Adrianople 1863-68)*, George Ronald, 1977.

Chicago:
Adib Taherzadeh. "The Limb of the Law of God: The Tablet of the Branch." In *The Revelation of Bahá'u'lláh (Vol. 2 — Adrianople 1863-68)*, George Ronald, 1977.