Boudville, S. E. (1967). Evaluation of the syllabus for the Cambridge Higher School Certificate Economics Paper One ("Survey of economic and industrial organisation") and Paper Two ("Study of the national income and ouput.").
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Boudville, Sylvester Edward. Evaluation of the Syllabus for the Cambridge Higher School Certificate Economics Paper One ("Survey of Economic and Industrial Organisation") and Paper Two ("Study of the National Income and Ouput."). [Kuala Lumpur], 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Boudville, Sylvester Edward. Evaluation of the Syllabus for the Cambridge Higher School Certificate Economics Paper One ("Survey of Economic and Industrial Organisation") and Paper Two ("Study of the National Income and Ouput."). 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.