Douglas, C. (2022). The couple at Number 9: A novel (First Harper Large Print edition.). Harper Large Print, an imprint of HarperCollins Publishers.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Douglas, Claire. The Couple at Number 9: A Novel. First Harper Large Print edition. New York, NY: Harper Large Print, an imprint of HarperCollins Publishers, 2022.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Douglas, Claire. The Couple at Number 9: A Novel. First Harper Large Print edition. Harper Large Print, an imprint of HarperCollins Publishers, 2022.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.