APA (7e ed.) Bronvermelding

Não informado. (2019). Statistical Yearbook. United Nations, Department of International Economic.

Chicago (17e ed.) Bronvermelding

Não informado. Statistical Yearbook. New York: United Nations, Department of International Economic, 2019.

MLA (8e ed.) Bronvermelding

Não informado. Statistical Yearbook. United Nations, Department of International Economic, 2019.

Let op: Deze citaties zijn niet altijd 100% accuraat.