Carle, E. (2002). "Slowly, slowly, slowly," said the sloth. Philomel Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Carle, Eric. "Slowly, Slowly, Slowly," Said the Sloth. New York: Philomel Books, 2002.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Carle, Eric. "Slowly, Slowly, Slowly," Said the Sloth. Philomel Books, 2002.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.