Illinois. University. Institute of Labor and Industrial Relations. (1952). Channels of employment; influence on the operations of public employment offices and other hiring channels in local job markets. [s.n.].
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Illinois. University. Institute of Labor and Industrial Relations. Channels of Employment; Influence on the Operations of Public Employment Offices and Other Hiring Channels in Local Job Markets. Urbana: [s.n.], 1952.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Illinois. University. Institute of Labor and Industrial Relations. Channels of Employment; Influence on the Operations of Public Employment Offices and Other Hiring Channels in Local Job Markets. [s.n.], 1952.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.