Socialforskningsinstituttet (Denmark) & Ploug, N. (1995). Welfare, development, and security: Three Danish essays. Danish National Institute of Social Research : Centre for Development Research : Danish Commission on Security and Disarmament : Wholesale for booksellers, Gyldendal.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Socialforskningsinstituttet (Denmark) و Niels Ploug. Welfare, Development, and Security: Three Danish Essays. Copenhagen, Denmark: Danish National Institute of Social Research : Centre for Development Research : Danish Commission on Security and Disarmament : Wholesale for booksellers, Gyldendal, 1995.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Socialforskningsinstituttet (Denmark) و Niels Ploug. Welfare, Development, and Security: Three Danish Essays. Danish National Institute of Social Research : Centre for Development Research : Danish Commission on Security and Disarmament : Wholesale for booksellers, Gyldendal, 1995.