Crewe, P., Gratwick, R., & Grafen, A. (2017). Defining fitness in an uncertain world. Springer Berlin Heidelberg.
Chicago-čujuhus (17. p.)Crewe, P., R. Gratwick, juo A. Grafen. Defining Fitness in an Uncertain World. Springer Berlin Heidelberg, 2017.
MLA-čujuhus (9. p.)Crewe, P., et al. Defining Fitness in an Uncertain World. Springer Berlin Heidelberg, 2017.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.