Timpson, W. M. 1., Dunbar, B., Kimmel, G., Bruyere, B., Newman, P., & Mizia, H. (2006). 147 practical tips for teaching sustainability: Connecting the environment, the economy, and society. Madison, Wisconsin: Atwood Publishing.

Timpson, William M. 1946-, Brian Dunbar, Gailmarie Kimmel, Berett Bruyere, Peter Newman, and Hillary Mizia. 147 Practical Tips for Teaching Sustainability: Connecting the Environment, the Economy, and Society. Madison, Wisconsin: Atwood Publishing, 2006.

Timpson, William M. 1946-, et al. 147 Practical Tips for Teaching Sustainability: Connecting the Environment, the Economy, and Society. Madison, Wisconsin: Atwood Publishing, 2006.