توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Clarke, G. R., & Wallsten, S. J. (2002). Universal(ly bad) service: Providing infrastructure services to rural and poor urban consumers. Regulation and Competition Policy, Development Research Group, World Bank.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Clarke, George R.G, و Scott J. Wallsten. Universal(ly Bad) Service: Providing Infrastructure Services to Rural and Poor Urban Consumers. Washington, D.C: Regulation and Competition Policy, Development Research Group, World Bank, 2002.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Clarke, George R.G, و Scott J. Wallsten. Universal(ly Bad) Service: Providing Infrastructure Services to Rural and Poor Urban Consumers. Regulation and Competition Policy, Development Research Group, World Bank, 2002.