PSA Symposium Singapore & Port of Singapore Authority. (1976). Developing Singapore as the regional warehouse and distributing centre: PSA Symposium, 5-7 Aug. 1976. Port of Singapore Authority.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)PSA Symposium Singapore و Port of Singapore Authority. Developing Singapore as the Regional Warehouse and Distributing Centre: PSA Symposium, 5-7 Aug. 1976. [Singapore: Port of Singapore Authority, 1976.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)PSA Symposium Singapore و Port of Singapore Authority. Developing Singapore as the Regional Warehouse and Distributing Centre: PSA Symposium, 5-7 Aug. 1976. Port of Singapore Authority, 1976.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.