1. Connection to Nature
2. Environmental Education at Summer Nature Camp
3. Erdogan, M. (2009). Fifth grade students’ environmental literacy and the factors affecting students’ environmentally responsible behaviors [Unpublished doctoral dissertation]. Middle East Technical University, Turkey.
4. Erdogan, M., Erentay, N., Balaban, D., Çakır, U., Şen, C., Aydogan, B., & Nechita, A. (2010). Expanding the horizons through field trips: Developing global action plan for saving endangered species and threatened environments. Academic Press.
5. Lee, C. L. (1984). Outdoor Education Activities for Elementary School Students. Academic Press.