APA
Economic Commission for Europe, . (2002). Best practice in business advisory, counselling and information serv ices. New York: United Nations.
Chicago
Economic Commission for Europe, . 2002. Best practice in business advisory, counselling and information serv ices. New York: United Nations.
Harvard
Economic Commission for Europe, . (2002). Best practice in business advisory, counselling and information serv ices. New York: United Nations.
MLA
Economic Commission for Europe, . Best practice in business advisory, counselling and information serv ices. New York: United Nations. 2002.