MLA

Schaefer, Robert, et al. Parallel Problem Solving From Nature, Ppsn Xi. Springer Berlin Heidelberg, 2010.

APA

Schaefer, R., Cotta, C., Kanade, T., Kolodziej, J., & Rudolph, G. (2010). Parallel Problem Solving from Nature, PPSN XI. Springer Berlin Heidelberg.

Chicago

Schaefer, Robert, Carlos Cotta, Takeo Kanade, Joanna Kolodziej, and Günter Rudolph. Parallel Problem Solving From Nature, PPSN XI. : Springer Berlin Heidelberg, 2010.