Sagan, S. (2019). For small creatures such as we: Rituals for finding meaning in our unlikely world.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Sagan, Sasha. For Small Creatures Such as We: Rituals for Finding Meaning in Our Unlikely World. 2019.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Sagan, Sasha. For Small Creatures Such as We: Rituals for Finding Meaning in Our Unlikely World. 2019.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.