Eckert, J. W. (2012). Linux+ guide to Linux certification (3rd ed.). Course Technology.
Citación estilo ChicagoEckert, Jason W. Linux+ Guide to Linux Certification. 3rd ed. Boston, Mass: Course Technology, 2012.
Cita MLAEckert, Jason W. Linux+ Guide to Linux Certification. 3rd ed. Course Technology, 2012.
Warning: These citations may not always be 100% accurate.