Keith Davis. (1966). Business and its environment. London: McGraw- Hill Book Company.
استشهاد بنمط شيكاغوKeith Davis. Business and Its Environment. London: McGraw- Hill Book Company, 1966.
MLA استشهادKeith Davis. Business and Its Environment. London: McGraw- Hill Book Company, 1966.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.