APA (7th ed.) Citation

Crewe, P., Gratwick, R., & Grafen, A. (2017). Defining fitness in an uncertain world. Springer Berlin Heidelberg.

Chicago Style (17th ed.) Citation

Crewe, P., R. Gratwick, and A. Grafen. Defining Fitness in an Uncertain World. Springer Berlin Heidelberg, 2017.

MLA (9th ed.) Citation

Crewe, P., et al. Defining Fitness in an Uncertain World. Springer Berlin Heidelberg, 2017.