Downs, W. M., & Wright, L. A. (1998). Playwriting from formula to form: A guide to writing a play. Harcourt Brace College Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Downs, William Missouri, و Lou Anne Wright. Playwriting from Formula to Form: A Guide to Writing a Play. Forth Worth, Tex: Harcourt Brace College Publishers, 1998.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Downs, William Missouri, و Lou Anne Wright. Playwriting from Formula to Form: A Guide to Writing a Play. Harcourt Brace College Publishers, 1998.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.