Sincero, J. (2020). Badass habits: Cultivate the awareness, boundaries, and daily upgrades you need to make them stick. John Murray Learning.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sincero, Jen. Badass Habits: Cultivate the Awareness, Boundaries, and Daily Upgrades You Need to Make Them Stick. London: John Murray Learning, 2020.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Sincero, Jen. Badass Habits: Cultivate the Awareness, Boundaries, and Daily Upgrades You Need to Make Them Stick. John Murray Learning, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.