Greyson, B. (2021). After: A doctor explores what near-death experiences reveal about life and beyond (First edition.). St. Martin's Essentials.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Greyson, Bruce. After: A Doctor Explores What Near-death Experiences Reveal About Life and Beyond. First edition. New York, NY: St. Martin's Essentials, 2021.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Greyson, Bruce. After: A Doctor Explores What Near-death Experiences Reveal About Life and Beyond. First edition. St. Martin's Essentials, 2021.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.