Robinson, S., & Ciulla, C. A. (2017). The hero two doors down: Based on the true story of friendship between a boy and a baseball legend (Unabridged.). Tantor Media.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Robinson, Sharon, و Chris Andrew Ciulla. The Hero Two Doors Down: Based on the True Story of Friendship Between a Boy and a Baseball Legend. Unabridged. Old Saybrook: Tantor Media, 2017.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Robinson, Sharon, و Chris Andrew Ciulla. The Hero Two Doors Down: Based on the True Story of Friendship Between a Boy and a Baseball Legend. Unabridged. Tantor Media, 2017.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.