APA-referens (7:e uppl.)

Charity Organization Society of the City of New York. The New York charities directory. Charity Organization Society in the City of New York.

Chicago-referens (17:e uppl.)

Charity Organization Society of the City of New York. The New York Charities Directory. New York: Charity Organization Society in the City of New York.

MLA-referens (8:e uppl.)

Charity Organization Society of the City of New York. The New York Charities Directory. Charity Organization Society in the City of New York.