PHELPS, E. S. (1967). Golden rules of economic growth: Studies of efficient and optimal investment. North-Holland Publishing.
Lua i Stíl Chicago (17ú heag.)PHELPS, Edmund S. Golden Rules of Economic Growth: Studies of Efficient and Optimal Investment. Amsterdam: North-Holland Publishing, 1967.
Lua MLA (9ú heag.)PHELPS, Edmund S. Golden Rules of Economic Growth: Studies of Efficient and Optimal Investment. North-Holland Publishing, 1967.
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