Rubio, P. F. (2010). There's always work at the post office: African American postal workers and the fight for jobs, justice, and equality. University of North Carolina Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Rubio, Philip F. There's Always Work at the Post Office: African American Postal Workers and the Fight for Jobs, Justice, and Equality. Chapel Hill: University of North Carolina Press, 2010.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Rubio, Philip F. There's Always Work at the Post Office: African American Postal Workers and the Fight for Jobs, Justice, and Equality. University of North Carolina Press, 2010.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.