Rogerson, P., Stott, T., Utley, D., & Comfort, J. (1994). Speaking effectively: Developing speaking skills for business English. Cambridge: Cambridge University Press.
استشهاد بنمط شيكاغوRogerson, Pamela., Trish Stott, Derek Utley, و Jeremy Comfort. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge: Cambridge University Press, 1994.
MLA استشهادRogerson, Pamela., Trish Stott, Derek Utley, و Jeremy Comfort. Speaking Effectively: Developing Speaking Skills for Business English. Cambridge: Cambridge University Press, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.