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..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLeslie, Clare Walker, और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLeslie, Clare Walker, और Charles Edmund Roth. Keeping a Nature Journal: Discover a Whole New Way of Seeing the World Around You. 2nd ed. Storey Pub., 2003.
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