توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Gais, T. (1996). Improper influence: Campaign finance law, political interest groups, and the problem of equality. University of Michigan Press.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Gais, Thomas. Improper Influence: Campaign Finance Law, Political Interest Groups, and the Problem of Equality. Ann Arbor: University of Michigan Press, 1996.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Gais, Thomas. Improper Influence: Campaign Finance Law, Political Interest Groups, and the Problem of Equality. University of Michigan Press, 1996.