APA-viite (7. p.)

Barba Navaretti, G., & Soloaga, I. (2001). Weightless machines and costless knowledge: An empirical analysis of trade and technology diffusion. World Bank.

Chicago-viite (17. p.)

Barba Navaretti, Giorgio, ja Isidro Soloaga. Weightless Machines and Costless Knowledge: An Empirical Analysis of Trade and Technology Diffusion. Washington, D.C: World Bank, 2001.

MLA-viite (9. p.)

Barba Navaretti, Giorgio, ja Isidro Soloaga. Weightless Machines and Costless Knowledge: An Empirical Analysis of Trade and Technology Diffusion. World Bank, 2001.

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