Leslie, C. W., & Roth, C. E. (2003). Keeping a nature journal: Discover a whole new way of seeing the world around you (2nd ed.). Storey Pub..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Leslie, Clare Walker, و Charles Edmund Roth. Keeping a Nature Journal: Discover a Whole New Way of Seeing the World Around You. 2nd ed. North Adams, MA: Storey Pub., 2003.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Leslie, Clare Walker, و Charles Edmund Roth. Keeping a Nature Journal: Discover a Whole New Way of Seeing the World Around You. 2nd ed. Storey Pub., 2003.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.