Alward, A. S. A. (2014). Hedges and boosters in the English as a foreign language undergraduate persuasive essays and job application letters.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Alward, Ali Saleh Ali. Hedges and Boosters in the English as a Foreign Language Undergraduate Persuasive Essays and Job Application Letters. 2014.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Alward, Ali Saleh Ali. Hedges and Boosters in the English as a Foreign Language Undergraduate Persuasive Essays and Job Application Letters. 2014.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.