Peterson, P. W. (2003). Developing writing: Writing skill practice book for EFL. U.S: United States Infomation Agency (USIA).
استشهاد بنمط شيكاغوPeterson, Patricia Wilcox. Developing Writing: Writing Skill Practice Book for EFL. U.S: United States Infomation Agency (USIA), 2003.
MLA استشهادPeterson, Patricia Wilcox. Developing Writing: Writing Skill Practice Book for EFL. U.S: United States Infomation Agency (USIA), 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.