Robson, W. A. (1922). From patronage to proficiency in the public service: An inquiry into professional qulaification and methods of recruitment in the civil service and the municipal service. Fabian.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Robson, William A. From Patronage to Proficiency in the Public Service: An Inquiry into Professional Qulaification and Methods of Recruitment in the Civil Service and the Municipal Service. London: Fabian, 1922.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Robson, William A. From Patronage to Proficiency in the Public Service: An Inquiry into Professional Qulaification and Methods of Recruitment in the Civil Service and the Municipal Service. Fabian, 1922.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.