Bale M.D. (1986). Horticultural trade of the expanded European Community. Implications for Mediterranean countries. Washington (États-Unis) : Banque Mondiale. 274 p. (Symposium).
http://documents.worldbank.org/curated/en/211281468254090234/Horticultural-trade-of-the-expanded-European-Community-implications-for-Mediterranean-countries
http://documents.worldbank.org/curated/en/211281468254090234/Horticultural-trade-of-the-expanded-European-Community-implications-for-Mediterranean-countries