Coe, D., & Hoffmaister, W. (1999). Are There International R and D Spillovers Among Randomly Matched Trade Partners?: A Response to Keller. International Monetary Fund.
Chicago-viite (17. p.)Coe, David, ja Willy Hoffmaister. Are There International R and D Spillovers Among Randomly Matched Trade Partners?: A Response to Keller. Washington, D.C.: International Monetary Fund, 1999.
MLA-viite (8. p.)Coe, David, ja Willy Hoffmaister. Are There International R and D Spillovers Among Randomly Matched Trade Partners?: A Response to Keller. International Monetary Fund, 1999.
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