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..
Cita Chicago Style (17a ed.)Leslie, Clare Walker, y 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.
Cita MLA (8a ed.)Leslie, Clare Walker, y Charles Edmund Roth. Keeping a Nature Journal: Discover a Whole New Way of Seeing the World Around You. 2nd ed. Storey Pub., 2003.
Precaución: Estas citas no son 100% exactas.