Jones, L., & Alexander, R. (1991). International Business English: Workbook. Communication Skills in English for Business Purposes. New York: Cambridge University Press.
استشهاد بنمط شيكاغوJones, Leo, و Richard Alexander. International Business English: Workbook. Communication Skills in English for Business Purposes. New York: Cambridge University Press, 1991.
MLA استشهادJones, Leo, و Richard Alexander. International Business English: Workbook. Communication Skills in English for Business Purposes. New York: Cambridge University Press, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.