APA (7e ed.) Bronvermelding

Não informado. (1981). Direction of Trade Statistics. International Monetary Fund.

Chicago (17e ed.) Bronvermelding

Não informado. Direction of Trade Statistics. Washington: International Monetary Fund, 1981.

MLA (8e ed.) Bronvermelding

Não informado. Direction of Trade Statistics. International Monetary Fund, 1981.

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