University of Western Australia. Faculty of Economics and Commerce. (1968). Economic activity. University of Western Australia Press for the Faculty of Economics and Commerce.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)University of Western Australia. Faculty of Economics and Commerce. Economic Activity. Nedlands, W.A.: University of Western Australia Press for the Faculty of Economics and Commerce, 1968.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)University of Western Australia. Faculty of Economics and Commerce. Economic Activity. University of Western Australia Press for the Faculty of Economics and Commerce, 1968.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.