Hafdahl, M., & Florence, K. (2023). The science of Agatha Christie: The truth behind Hercule Poirot, Miss Marple, and more iconic characters from the Queen of Crime. Skyhorse Publishing.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hafdahl, Meg, و Kelly Florence. The Science of Agatha Christie: The Truth Behind Hercule Poirot, Miss Marple, and More Iconic Characters from the Queen of Crime. New York, NY: Skyhorse Publishing, 2023.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hafdahl, Meg, و Kelly Florence. The Science of Agatha Christie: The Truth Behind Hercule Poirot, Miss Marple, and More Iconic Characters from the Queen of Crime. Skyhorse Publishing, 2023.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.