Kral, T. (1994). Plays for reading (Rev. ed.). Materials Development and Review Branch, English Language Programs Division, United States Information Agency.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Kral, Thomas. Plays for Reading. Rev. ed. Washington, D.C: Materials Development and Review Branch, English Language Programs Division, United States Information Agency, 1994.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Kral, Thomas. Plays for Reading. Rev. ed. Materials Development and Review Branch, English Language Programs Division, United States Information Agency, 1994.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.