APA način citiranja (7. izdanje)
Machuga, R. (2012). Life, the universe, and everything: An Aristotelian philosophy for a scientific age. Lutterworth.
Čikaški stil citiranja (17. izdanje)
Machuga, Ric. Life, the Universe, and Everything: An Aristotelian Philosophy for a Scientific Age. Cambridge, U.K.: Lutterworth, 2012.
MLA način citiranja (9. izdanje)
Machuga, Ric. Life, the Universe, and Everything: An Aristotelian Philosophy for a Scientific Age. Lutterworth, 2012.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.