Barba Navaretti, G., & Soloaga, I. (2001). Weightless machines and costless knowledge: An empirical analysis of trade and technology diffusion. World Bank.
Čikaški stil citiranja (17. izdanje)Barba Navaretti, Giorgio, i Isidro Soloaga. Weightless Machines and Costless Knowledge: An Empirical Analysis of Trade and Technology Diffusion. Washington, D.C: World Bank, 2001.
MLA način citiranja (9. izdanje)Barba Navaretti, Giorgio, i Isidro Soloaga. Weightless Machines and Costless Knowledge: An Empirical Analysis of Trade and Technology Diffusion. World Bank, 2001.
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