Daniel S. Hamermesh and Gerard A. Pfann. (2004). The Economics of Time Use. ELSEVIER.
Lua i Stíl Chicago (17ú heag.)Daniel S. Hamermesh and Gerard A. Pfann. The Economics of Time Use. ELSEVIER, 2004.
Lua MLA (8ú heag.)Daniel S. Hamermesh and Gerard A. Pfann. The Economics of Time Use. ELSEVIER, 2004.
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