Eckert, Jason W.. Linux+ Guide to Linux Certification, Third, Boston, Massachusetts: Cengage Learning, 2012 — 33-bet. ISBN 978-1111541538. Qaraldi: 2013-yil 14-aprel. „The shared commonality of the kernel is what defines a system's membership in the Linux family; the differing OSS applications that can interact with the common kernel are what differentiate Linux distributions.“
