Birdsall, J., & Denaker, S. (2006). The Penderwicks: A summer tale of four sisters, two rabbits, and a very interesting boy. Random House/Listening Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Birdsall, Jeanne, و Susan Denaker. The Penderwicks: A Summer Tale of Four Sisters, Two Rabbits, and a Very Interesting Boy. New York: Random House/Listening Library, 2006.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Birdsall, Jeanne, و Susan Denaker. The Penderwicks: A Summer Tale of Four Sisters, Two Rabbits, and a Very Interesting Boy. Random House/Listening Library, 2006.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.