Markusen, J. R., & Maskus, K. E. (2001). A unified approach to intra-industry trade and direct foreign investment. National Bureau of Economic Research.
Lua i Stíl Chicago (17ú heag.)Markusen, James R., agus Keith E. Maskus. A Unified Approach to Intra-industry Trade and Direct Foreign Investment. Cambridge: National Bureau of Economic Research, 2001.
Lua MLA (9ú heag.)Markusen, James R., agus Keith E. Maskus. A Unified Approach to Intra-industry Trade and Direct Foreign Investment. National Bureau of Economic Research, 2001.
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