BibTeX:
@incollection{WorldOrderEditors2010,
  author = {World Order Editors},
  title = {Firuz Kazemzadeh: Historian of the Bahá'í Cause},
  booktitle = {World Order},
  year = {2010},
  publisher = {National Spiritual Assembly of the Bahá'ís of the United States},
}

APA:
World Order Editors. (2010). Firuz Kazemzadeh: Historian of the Bahá'í Cause. In *World Order*. National Spiritual Assembly of the Bahá'ís of the United States.

MLA:
World Order Editors. "Firuz Kazemzadeh: Historian of the Bahá'í Cause." *World Order*, National Spiritual Assembly of the Bahá'ís of the United States, 2010.

Chicago:
World Order Editors. "Firuz Kazemzadeh: Historian of the Bahá'í Cause." In *World Order*, National Spiritual Assembly of the Bahá'ís of the United States, 2010.