Trích dẫn APA

OECD. (1976). Regional problems and policies in OECD countries. Paris: Organization for economic co-operation and development.

Trích dẫn kiểu Chicago

OECD. Regional Problems and Policies in OECD Countries. Paris: Organization for economic co-operation and development, 1976.

Trích dẫn MLA

OECD. Regional Problems and Policies in OECD Countries. Paris: Organization for economic co-operation and development, 1976.

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