Tufail, J., & Lyon, K. (2007). Listen up! speak up!: The third book of speaking up : a plain text guide to advocacy. Jessica Kingsley Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Tufail, John, و Kate Lyon. Listen Up! Speak Up!: The Third Book of Speaking Up : a Plain Text Guide to Advocacy. London ; Philadelphia: Jessica Kingsley Publishers, 2007.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Tufail, John, و Kate Lyon. Listen Up! Speak Up!: The Third Book of Speaking Up : a Plain Text Guide to Advocacy. Jessica Kingsley Publishers, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.