Cita APA (7a ed.)

Sobel, D. (2020). The sky above and the mud below: Lessons from nature preschools and forest kindergartens (First edition.). Redleaf Press.

Cita Chicago Style (17a ed.)

Sobel, David. The Sky Above and the Mud Below: Lessons from Nature Preschools and Forest Kindergartens. First edition. St. Paul, MN: Redleaf Press, 2020.

Cita MLA (8a ed.)

Sobel, David. The Sky Above and the Mud Below: Lessons from Nature Preschools and Forest Kindergartens. First edition. Redleaf Press, 2020.