United Nations. Inter-Organization Board for Information Systems. (1978). Directory of United Nations information systems and services. Inter-Organization Board for Information Systems.
Cytowanie według stylu Chicago (wyd. 17)United Nations. Inter-Organization Board for Information Systems. Directory of United Nations Information Systems and Services. Geneva: Inter-Organization Board for Information Systems, 1978.
Cytowanie według stylu MLA (wyd. 8)United Nations. Inter-Organization Board for Information Systems. Directory of United Nations Information Systems and Services. Inter-Organization Board for Information Systems, 1978.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..