Tan, H. (2002). Hedging in the Discussion Section of Research Articles Written by Native and Non-Native Writers of English.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tan, Helen. Hedging in the Discussion Section of Research Articles Written by Native and Non-Native Writers of English. 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Tan, Helen. Hedging in the Discussion Section of Research Articles Written by Native and Non-Native Writers of English. 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.