Quah, S. (1970). The Public Service Commision in Singapore: A comparative study of (a) its evolution and (b) its recruitment and selection procedures vis-a-vis the Public Service Commissions in Ceylon, India and Malaysia.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Quah, Siew-tien. The Public Service Commision in Singapore: A Comparative Study of (a) Its Evolution and (b) Its Recruitment and Selection Procedures Vis-a-vis the Public Service Commissions in Ceylon, India and Malaysia. 1970.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Quah, Siew-tien. The Public Service Commision in Singapore: A Comparative Study of (a) Its Evolution and (b) Its Recruitment and Selection Procedures Vis-a-vis the Public Service Commissions in Ceylon, India and Malaysia. 1970.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.