Comfort, J. (2007). Effective presentations: Oxford business english skills. Oxford: Oxford University Press.
استشهاد بنمط شيكاغوComfort, Jeremy. Effective Presentations: Oxford Business English Skills. Oxford: Oxford University Press, 2007.
MLA استشهادComfort, Jeremy. Effective Presentations: Oxford Business English Skills. Oxford: Oxford University Press, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.