APA (7th ed.) Citation

Enns, R. H. (2011). It's a nonlinear world. Springer.

Chicago Style (17th ed.) Citation

Enns, Richard H. It's a Nonlinear World. New York: Springer, 2011.

MLA (9th ed.) Citation

Enns, Richard H. It's a Nonlinear World. Springer, 2011.