Rosen K., Host D. & Klee R. e. a. (2007). Unix. New Delhi: TMH.
Rosen Kenneth, Host Douglas and Klee Rachel et al. 2007. Unix. New Delhi: TMH.
Rosen K., Host D. and Klee R. e. a. (2007). Unix. New Delhi: TMH.
Rosen Kenneth, Host Douglas and Klee Rachel et al. Unix. New Delhi: TMH. 2007.
