Lawrence, A. E. (2002). The influence of interaction through letter writing on the development of writing abilities of form four students: A case study.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Lawrence, Agnes Edwin. The Influence of Interaction Through Letter Writing on the Development of Writing Abilities of Form Four Students: A Case Study. 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Lawrence, Agnes Edwin. The Influence of Interaction Through Letter Writing on the Development of Writing Abilities of Form Four Students: A Case Study. 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.