(2010). American citizenship: Community involvement, political participation, voting and elections, state and local government, volunteerism, charitable giving. Bureau of International Information Programs.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)American Citizenship: Community Involvement, Political Participation, Voting and Elections, State and Local Government, Volunteerism, Charitable Giving. Washington, D.C: Bureau of International Information Programs, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)American Citizenship: Community Involvement, Political Participation, Voting and Elections, State and Local Government, Volunteerism, Charitable Giving. Bureau of International Information Programs, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.