Style de citation APA (7e éd.)

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.].

Style de citation Chicago (17e éd.)

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

Style de citation MLA (8e éd.)

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