Castles, S. (2006). Back to the future? Can Europe meet its labour needs through temporary migration? International Migration Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Castles, S. Back to the Future? Can Europe Meet Its Labour Needs Through Temporary Migration? International Migration Institute, 2006.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Castles, S. Back to the Future? Can Europe Meet Its Labour Needs Through Temporary Migration? International Migration Institute, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.