APA-referens (7:e uppl.)

Charity Organization Society of the City of New York & Welfare Council of New York City. Directory of social agencies of the City of New York. Columbia University Press [etc.].

Chicago-referens (17:e uppl.)

Charity Organization Society of the City of New York och Welfare Council of New York City. Directory of Social Agencies of the City of New York. New York: Columbia University Press [etc.].

MLA-referens (8:e uppl.)

Charity Organization Society of the City of New York och Welfare Council of New York City. Directory of Social Agencies of the City of New York. Columbia University Press [etc.].