Hollett, V., & Duckworth, M. (1992). Business Objectives: Student"s Book & Workbook. Oxford: Oxford University Press.
استشهاد بنمط شيكاغوHollett, Vicki, و Michael Duckworth. Business Objectives: Student"s Book & Workbook. Oxford: Oxford University Press, 1992.
MLA استشهادHollett, Vicki, و Michael Duckworth. Business Objectives: Student"s Book & Workbook. Oxford: Oxford University Press, 1992.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.