Lua APA (7ú heag.)

World Bank & Zeng, D. Z. (2008). Knowledge, technology, and cluster-based growth in Africa. World Bank.

Lua i Stíl Chicago (17ú heag.)

World Bank agus Douglas Zhihua Zeng. Knowledge, Technology, and Cluster-based Growth in Africa. Washington, DC: World Bank, 2008.

Lua MLA (9ú heag.)

World Bank agus Douglas Zhihua Zeng. Knowledge, Technology, and Cluster-based Growth in Africa. World Bank, 2008.

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