Coe, N., Rycroft, R., & Ernest, P. (1983). Writing skills: A problem-solving approach for upper-intermediate and more advanced students. Cambridge University Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Coe, Norman, Robin Rycroft, و Pauline Ernest. Writing Skills: A Problem-solving Approach for Upper-intermediate and More Advanced Students. Cambridge: Cambridge University Press, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Coe, Norman, et al. Writing Skills: A Problem-solving Approach for Upper-intermediate and More Advanced Students. Cambridge University Press, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.