Bibliography
Lucas, Michael W., Absolute FreeBSD: The Complete Guide to FreeBSD, San Francisco 2019.
Lucas, Michael W., Jude, Allan, FreeBSD Mastery: ZFS, Tilted Windmill Press 2015.
The FreeBSD Documentation Project, FreeBSD Handbook, at https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/ (accessed 12 July 2019).
Schneider, Wolfram, FreeBSD Manual Pages, at https://www.freebsd.org/cgi/man.cgi (accessed 12 July 2019).