Bryson, T. P. (2020). The bottom line for baby: From sleep training to screens, thumb sucking to tummy time--what the science says. Ballantine Books.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Bryson, Tina Payne. The Bottom Line for Baby: From Sleep Training to Screens, Thumb Sucking to Tummy Time--what the Science Says. New York: Ballantine Books, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Bryson, Tina Payne. The Bottom Line for Baby: From Sleep Training to Screens, Thumb Sucking to Tummy Time--what the Science Says. Ballantine Books, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.